GATE Chemistry PYQs Mock Test

Q: Is there negative marking for NAT and MSQ questions in GATE Chemistry?

No, NAT and MSQ questions have zero negative marking in GATE Chemistry. Negative marks apply only to MCQs.

Q: What is the typical qualifying cutoff for GATE Chemistry (CY)?

The General category qualifying cutoff usually ranges between 27 and 32 marks out of 100.

Q: Can I bring a physical scientific calculator to the GATE examination?

No, physical calculators are prohibited. An on-screen virtual calculator is provided on the CBT testing interface.

Question 1

Choose the word that is opposite in meaning (antonym) to the word TRANSIENT:

Accepted Answer

Permanent (स्थायी)

Answer

Fleeting (अल्पकालिक)

Answer

Ephemeral (क्षणिक)

Answer

Temporary (अस्थायी)

Question 2

If x : y = 3 : 4 and y : z = 2 : 5, then the ratio x : z is:

Accepted Answer

3 : 10

Answer

3 : 5

Answer

6 : 10

Answer

1 : 2

Question 3

Choose the most appropriate preposition to complete the sentence:“The committee members could not agree ______ the proposed changes.”

Accepted Answer

on (पर)

Answer

with (साथ)

Answer

to (को)

Answer

for (के लिए)

Question 4

A train running at a uniform speed of 72 km/h crosses a 200 m long platform in 20 seconds. The length of the train is:

Accepted Answer

200 m

Answer

240 m

Answer

160 m

Answer

300 m

Question 5

Based on the given statements, determine which conclusion(s) logically follow:Statements: 1. All scientists are researchers. 2. No researcher is lazy.Conclusions: I. No scientist is lazy. II. Some researchers are scientists.

Accepted Answer

Both I and II follow (I और II दोनों निकलते हैं)

Answer

Only conclusion I follows (केवल निष्कर्ष I निकलता है)

Answer

Only conclusion II follows (केवल निष्कर्ष II निकलता है)

Answer

Neither I nor II follows (न तो I और न ही II निकलता है)

Question 6

A bag contains 5 red, 4 blue, and 3 green balls. If two balls are drawn at random without replacement, the probability that both balls are red is:

Accepted Answer

5 / 33

Answer

5 / 36

Answer

10 / 33

Answer

2 / 11

Question 7

P can complete a piece of work in 12 days, and Q can complete the same work in 18 days. If they work together for 4 days, the remaining fraction of the work is:

Accepted Answer

4 / 9

Answer

5 / 9

Answer

1 / 3

Answer

2 / 9

Question 8

Find the next term in the sequence: 2, 6, 12, 20, 30, ______

Accepted Answer

42

Answer

40

Answer

44

Answer

36

Question 9

In a circle of radius 10 cm, two parallel chords of length 12 cm and 16 cm lie on opposite sides of the center. The distance between the two chords is:

Accepted Answer

14 cm

Answer

12 cm

Answer

15 cm

Answer

10 cm

Question 10

“Installing solar power plants in a region reduces air pollution by decreasing reliance on fossil fuels.” Which of the following is an underlying assumption of this argument?

Accepted Answer

The electricity generated by solar plants will replace electricity from fossil-fuel burning plants (सौर संयंत्रों से उत्पन्न बिजली जीवाश्म ईंधन संयंत्रों की बिजली का स्थान लेगी)

Answer

Solar power is cheaper than all other energy sources (सौर ऊर्जा अन्य सभी ऊर्जा स्रोतों से सस्ती है)

Answer

Fossil fuels do not emit greenhouse gases (जीवाश्म ईंधन ग्रीनहाउस गैसों का उत्सर्जन नहीं करते)

Answer

Solar plants can operate efficiently during night hours without batteries (सौर संयंत्र रात में बिना बैटरी के कुशलतापूर्वक कार्य कर सकते हैं)

Question 11

A complex of Ni(II), [NiCl2(PPh3)2] is paramagnetic, whereas the analogous complex of Palladium(II) is diamagnetic. The number of isomers shown by both complexes respectively are:

Accepted Answer

1 and 2 (1 और 2)

Answer

2 and 1 (2 और 1)

Answer

1 and 1 (1 और 1)

Answer

2 and 2 (2 और 2)

Question 12

In a trigonal prismatic crystal field (D3h symmetry), the d-orbital with the highest energy is:

Accepted Answer

dyz (or dxz, dyz)

Answer

dxy

Answer

dz2

Answer

dx2-y2

Question 13

The colour and nature of electronic transition responsible for the deep coloration of [Fe(NCS)6]3− and [Fe(bpy)3]2+ respectively are:

Accepted Answer

Blood red, charge transfer; dark red, charge transfer (रक्त लाल, आवेश स्थानांतरण; गहरा लाल, आवेश स्थानांतरण)

Answer

Dark red, d-d transition; blood red, charge transfer (गहरा लाल, d-d संक्रमण; रक्त लाल, आवेश स्थानांतरण)

Answer

Blue, charge transfer; blood red, charge transfer (नीला, आवेश स्थानांतरण; रक्त लाल, आवेश स्थानांतरण)

Answer

Blue, charge transfer; dark red, d-d transition (नीला, आवेश स्थानांतरण; गहरा लाल, d-d संक्रमण)

Question 14

The correct order of second ionization potential (IE2) among the following elements: Be, B, C, N, and O is:

Accepted Answer

O > N > B > C > Be

Answer

N > O > B > C > Be

Answer

Be > C > B > O > N

Answer

O > N > C > B > Be

Question 15

The lanthanoid used in the manufacture of glassblower’s goggles is:

Accepted Answer

Nd (नियोडिमियम)

Answer

Pm (प्रोमीथियम)

Answer

Gd (गैडोलीनियम)

Answer

Lu (ल्यूटेशियम)

Question 16

Select the correct statements from the following regarding f-block elements:
    (i) Absorption spectra of lanthanoids(III) are largely dependent on the nature of ligands.
    (ii) Magnetic moments of lanthanoids(III) are generally greater than the corresponding actinides(III).
    (iii) Spectra of heavier actinides(III) ions show resemblance with lanthanoids(III) ions.
    (iv) Ce3+ ion is colourless in aqueous medium.

Accepted Answer

(ii), (iii), (iv)

Answer

(i), (ii), (iii), (iv)

Answer

(i), (ii), (iii)

Answer

(iii), (iv)

Question 17

Among the following metal complexes, the correct order of increasing hydration energy (magnitude of hydration enthalpy) is:
    (I) [Co(H2O)6]2+
    (II) [Fe(H2O)6]2+
    (III) [V(H2O)6]2+
    (IV) [Sc(H2O)6]2+

Accepted Answer

IV < III < II < I

Answer

IV < II < III < I

Answer

II < IV < I < III

Answer

III < IV < II < I

Question 18

Which of the following octahedral complexes exhibits tetragonal compression (Jahn-Teller compression)?

Accepted Answer

KCuF3

Answer

[CoCl2(NH3)4]

Answer

KMnF3

Answer

Both (a) and (c) (दोनों (a) और (c))

Question 19

Arrange the following complexes in the decreasing order of their respective wavelength of absorption (\lambda_{max}):
    (I) [Cr(H2O)6]3+
    (II) [Cr(CN)6]3−
    (III) [CrF6]3−

Accepted Answer

(III) > (I) > (II)

Answer

(I) > (II) > (III)

Answer

(II) > (I) > (III)

Answer

(III) > (II) > (I)

Question 20

The temperature at which 10% of the molecules in a two-level system will be in the first excited electronic state relative to the ground state (with an energy separation of 40 kJ/mol, or N1/N0 = 0.1) is approximately:

Accepted Answer

2190 K

Answer

9021 K

Answer

2094 K

Answer

2904 K

Question 21

The complex which shows the fastest rate of oxidative addition of dihydrogen (H2) is:

Accepted Answer

IrCl(CO)(PPh3)2

Answer

RhCl(CO)(PPh3)2

Answer

IrCl(CO)2(PPh3)

Answer

IrCl(CO)(PPh3)2 & RhCl(CO)(PPh3)2 at equal rates

Question 22

The spinel structure of FeCr2O4 (Cr2FeO4) has a cubic close-packed arrangement of oxide ions. The fractions of the tetrahedral and octahedral sites occupied by cations respectively are:

Accepted Answer

1/8 & 1/2

Answer

1/4 & 1/2

Answer

1/2 & 1/4

Answer

1/2 & 1/8

Question 23

The correct statement among the following is:

Accepted Answer

Fullerenes ought to serve as either electrophile or nucleophile when paired with appropriate metal (फुलेरीन उपयुक्त धातु के साथ युग्मित होने पर इलेक्ट्रॉनरागी या नाभिकरागी दोनों के रूप में कार्य कर सकते हैं)

Answer

18-crown-6 shows more affinity towards Na+ as compared to other alkali metal cations (18-क्राउन-6 अन्य क्षार धातु धनायनों की तुलना में Na+ के प्रति अधिक बंधुता दर्शाता है)

Answer

The boron cluster [B6H6]2− has a nido structure (बोरोन क्लस्टर [B6H6]2− की निडो संरचना होती है)

Answer

The stability of the complex W(CO)5E (E = Xe, Kr, Ar) decreases in the order Ar > Kr > Xe (संकुल W(CO)5E का स्थायित्व Ar > Kr > Xe के क्रम में घटता है)

Question 24

The polyhedral skeletal structures of Fe5(CO)15C and Os5(CO)16 respectively are:

Accepted Answer

Square pyramidal and trigonal bipyramidal (वर्ग पिरामिडीय और त्रिकोणीय द्विपिरामिडीय)

Answer

Trigonal bipyramidal and square pyramidal (त्रिकोणीय द्विपिरामिडीय और वर्ग पिरामिडीय)

Answer

Both trigonal bipyramidal (दोनों त्रिकोणीय द्विपिरामिडीय)

Answer

Both square pyramidal (दोनों वर्ग पिरामिडीय)

Question 25

The true statement about the base hydrolysis of [Co(CN)5Br]3− is:

Accepted Answer

The rate is independent of the concentration of nucleophile / base (अभिक्रिया की दर नाभिकरागी / क्षार की सांद्रता पर निर्भर नहीं करती है)

Answer

The rate is dependent on the concentration of nucleophile / base (अभिक्रिया की दर नाभिकरागी / क्षार की सांद्रता पर निर्भर करती है)

Answer

The first order reaction is not possible (प्रथम कोटि अभिक्रिया संभव नहीं है)

Answer

The SN1CB mechanism is possible (S_N1CB क्रियाविधि संभव है)

Question 26

The thermodynamic quantities that remain constant in a Grand Canonical Ensemble are:

Accepted Answer

V, \mu, T

Answer

N, V, E

Answer

N, V, T

Answer

E, N, H

Question 27

Consider the following statements for the enzyme catalase:
    A. It is a heme-containing protein.
    B. It catalyzes the disproportionation of water.
    C. In its resting active site, the metal is in +3 oxidation state.
    D. It catalyzes the reduction of dioxygen.
    The correct statements are:

Accepted Answer

A and C

Answer

A, B and C

Answer

A, C and D

Answer

B and C

Question 28

The correct order for the given properties is: (A) :CH2 < :CCl2 < :CF2 (Stability order) (B) N–F < Sb–F < As–F < P–F (Bond energy order) (C) BeF2 > CaF2 > SrF2 (Covalent character order) (D) NH3 > PH3 > AsH3 > SbH3 (Bond angle order)

Accepted Answer

All are correct (सभी सही हैं)

Answer

A, B and C

Answer

B, C and D

Answer

A, B and D

Question 29

The value of the nephelauxetic parameter (\beta = B'/B_0) is maximum for which of the following ligands?

Accepted Answer

H2O

Answer

NH3

Answer

en

Answer

Cl−

Question 30

The pair of lanthanoid(III) ions that exhibits strong emission (luminescence) spectra in the visible region is:

Accepted Answer

Eu3+ and Tb3+

Answer

La3+ and Lu3+

Answer

Ce3+ and Gd3+

Answer

Eu3+ and Gd3+

Question 31

The reductive elimination product in [\eta5-Cp2Nb(H)(\eta2-C2H4)] is:

Accepted Answer

Cannot occur / not possible (संभव नहीं है)

Answer

\eta5-Cp2

Answer

\eta5-CpH

Answer

C2H6

Question 32

The behaviour of HClO4 in anhydrous H2SO4 and SbF5 in anhydrous HF are respectively:

Accepted Answer

Weak acid and strong acid (दुर्बल अम्ल और प्रबल अम्ल)

Answer

Strong acid and weak acid (प्रबल अम्ल और दुर्बल अम्ल)

Answer

Strong base and strong acid (प्रबल क्षार और प्रबल अम्ल)

Answer

Weak base and weak acid (दुर्बल क्षार और दुर्बल अम्ल)

Question 33

The number of metal-metal bond(s), with \sigma, \pi, and \delta character, present in the quadruply bonded complex [Re2Cl8]2− are respectively:

Accepted Answer

1 \sigma, 2 \pi, and 1 \delta (1 \sigma, 2 \pi और 1 \delta)

Answer

1 \sigma, 1 \pi, and 2 \delta (1 \sigma, 1 \pi और 2 \delta)

Answer

2 \sigma, 1 \pi, and 1 \delta (2 \sigma, 1 \pi और 1 \delta)

Answer

1 \sigma, 2 \pi, and 0 \delta (1 \sigma, 2 \pi और 0 \delta)

Question 34

The major product formed in the bimolecular elimination (E2) reaction of (2R,3R)-2-bromo-3-methylpentane with sodium methoxide (NaOMe) in methanol is:

Accepted Answer

(E)-3-methylpent-2-ene ((E)-3-मेथिलपेन्ट-2-ईन)

Answer

(Z)-3-methylpent-2-ene ((Z)-3-मेथिलपेन्ट-2-ईन)

Answer

3-methylenepentane (3-मेथिलीनपेन्टेन)

Answer

(2R,3R)-2-methoxy-3-methylpentane ((2R,3R)-2-मेथॉक्सी-3-मेथिलपेन्टेन)

Question 35

According to the Woodward-Hoffmann rules, the thermal electrocyclic ring closure of a conjugated 6\pi electron triene system proceeds via:

Accepted Answer

\Delta, disrotatory (ऊष्मीय, घूर्णीविपरीत / disrotatory)

Answer

\Delta, conrotatory (ऊष्मीय, समघूर्णी / conrotatory)

Answer

h
u, disrotatory (प्रकाश रासायनिक, घूर्णीविपरीत / disrotatory)

Answer

h
u, suprafacial (प्रकाश रासायनिक, सुप्राफेशियल)

Question 36

For a particle of mass m confined in a one-dimensional box of length L with infinitely high walls, the ratio of the energy of the second excited state to that of the ground state is:

Accepted Answer

9:1

Answer

4:1

Answer

3:1

Answer

16:1

Question 37

According to Transition State Theory (Eyring equation), the activation entropy (\Delta S^\ddagger) for a gas-phase bimolecular association reaction between two non-linear molecules is generally:

Accepted Answer

Highly negative (अत्यधिक ऋणात्मक)

Answer

Zero (शून्य)

Answer

Highly positive (अत्यधिक धनात्मक)

Answer

Positive at low temperature and negative at high temperature (निम्न ताप पर धनात्मक तथा उच्च ताप पर ऋणात्मक)

Question 38

Which of the following organometallic complexes obeys the 18-electron rule?

Accepted Answer

[Mn(CO)5(CH3)]

Answer

[V(CO)6]

Answer

[Cr(\eta5-C5H5)2]

Answer

[Co(CO)4]

Question 39

The total number of microstates for a free gaseous ion with a d3 electronic configuration is:

Accepted Answer

120

Answer

45

Answer

60

Answer

210

Question 40

Among the following non-benzenoid polycyclic conjugated hydrocarbons, the one that is predicted to be non-aromatic by Craig's rule of symmetry is:

Accepted Answer

Heptalene (हेप्टालीन)

Answer

Azulene (एज़ुलीन)

Answer

Naphthalene (नेफ़्थालीन)

Answer

Phenanthrene (फ़िनांथ्रीन)

Question 41

According to the Debye-Hückel limiting law, the slope of the plot of \log_{10} \gamma_\pm versus \sqrt{I} for a 1:2 electrolyte (such as CaCl2) in aqueous solution at 298 K (with Debye constant A = 0.509) is:

Accepted Answer

-1.018

Answer

-0.509

Answer

-2.036

Answer

-1.527

Question 42

The intensely deep blue colour (\lambda_{max} \approx 600 nm, \epsilon \approx 5000 M^{-1}cm^{-1}) observed in Type-1 copper proteins (such as plastocyanin and azurin) is due to:

Accepted Answer

S(Cys) &rarr; Cu(II) Ligand-to-Metal Charge Transfer (LMCT)

Answer

Cu(II) &rarr; N(His) Metal-to-Ligand Charge Transfer (MLCT)

Answer

Laporte-forbidden d-d transition (लापोर्ते-वर्जित d-d संक्रमण)

Answer

S(Met) &rarr; Cu(II) Charge Transfer

Question 43

Which of the following thermodynamic relations is correct according to Maxwell's relations?

Accepted Answer

(\partial T / \partial V)_S = -(\partial P / \partial S)_V

Answer

(\partial T / \partial P)_S = -(\partial V / \partial S)_P

Answer

(\partial S / \partial V)_T = -(\partial P / \partial T)_V

Answer

(\partial S / \partial P)_T = (\partial V / \partial T)_P

Question 44

A sample of (S)-2-chlorobutane contaminated with its (R)-enantiomer exhibits an observed specific rotation of [\alpha] = +27.0°. If the enantiomerically pure (S)-isomer has a specific rotation of [\alpha]_0 = +36.0°, the percentages of (S)- and (R)-enantiomers in the mixture are respectively:

Accepted Answer

87.5% and 12.5% (87.5% और 12.5%)

Answer

75.0% and 25.0% (75.0% और 25.0%)

Answer

80.0% and 20.0% (80.0% और 20.0%)

Answer

62.5% and 37.5% (62.5% और 37.5%)

Question 45

In the Tanabe-Sugano diagram for octahedral d6 complexes, the ground state spectroscopic terms for the high-spin and low-spin configurations respectively are:

Accepted Answer

5T2g and 1A1g

Answer

5Eg and 1T1g

Answer

3T1g and 1A1g

Answer

5T2g and 3T1g

Question 46

The major product formed upon bromination of anisole (methoxybenzene) with Br2 in the presence of FeBr3 is:

Accepted Answer

4-bromoanisole (p-bromoanisole)

Answer

2-bromoanisole (o-bromoanisole)

Answer

3-bromoanisole (m-bromoanisole)

Answer

2,4,6-tribromoanisole

Question 47

The thermal Claisen rearrangement of allyl phenyl ether to 2-allylphenol proceeds via which pericyclic mechanism?

Accepted Answer

[3,3]-sigmatropic rearrangement ([3,3]-सिग्माट्रॉपिक पुनर्विन्यास)

Answer

[2,3]-sigmatropic rearrangement ([2,3]-सिग्माट्रॉपिक पुनर्विन्यास)

Answer

[1,3]-sigmatropic rearrangement ([1,3]-सिग्माट्रॉपिक पुनर्विन्यास)

Answer

[1,5]-sigmatropic rearrangement ([1,5]-सिग्माट्रॉपिक पुनर्विन्यास)

Question 48

The Robinson annulation reaction between cyclohexanone and methyl vinyl ketone in the presence of a base yields which major bicyclic product?

Accepted Answer

\Delta^{1,9}-2-octalone (\Delta^{1,9}-2-ऑक्टालोन)

Answer

1-tetralone (1-टेट्रालोन)

Answer

2-decalone (2-डेकालोन)

Answer

Bicyclo[4.4.0]decane

Question 49

In the electronic absorption spectrum of the octahedral d8 complex [Ni(H2O)6]2+, the three spin-allowed absorption bands originate from which ground state term?

Accepted Answer

3A2g

Answer

3T1g

Answer

1A1g

Answer

3T2g

Question 50

The observation of only a single sharp resonance line in the 13C NMR spectrum of Fe(CO)5 at room temperature is explained by:

Accepted Answer

Berry pseudorotation (बेरी स्यूडोरोटेशन)

Answer

Ring whizzing

Answer

Intermolecular ligand exchange (अंतराअणुक लिगेंड विनिमय)

Answer

Reductive elimination

Question 51

The coordination number and geometry around the Zn2+ ion at the active site of the enzyme Carbonic Anhydrase in its resting state are respectively:

Accepted Answer

4, distorted tetrahedral (4, विकृत चतुष्फलकीय)

Answer

6, octahedral (6, अष्टफलकीय)

Answer

5, trigonal bipyramidal (5, त्रिकोणीय द्विपिरामिडीय)

Answer

4, square planar (4, वर्ग समतलीय)

Question 52

In the 1H NMR spectrum of ethyl bromide (CH3CH2Br), the multiplicity and intensity (integration) ratio of the CH3 and CH2 protons respectively are:

Accepted Answer

Triplet (3H) and Quartet (2H)

Answer

Doublet (3H) and Triplet (2H)

Answer

Quartet (3H) and Triplet (2H)

Answer

Singlet (3H) and Doublet (2H)

Question 53

In the mass spectrum of bromobenzene (C6H5Br), the intensity ratio of the molecular ion peaks [M]+ and [M+2]+ is approximately:

Accepted Answer

1 : 1

Answer

3 : 1

Answer

1 : 3

Answer

9 : 1

Question 54

According to the Langmuir adsorption isotherm, at very high pressure, the fractional surface coverage (	heta) approaches:

Accepted Answer

1 (शून्य कोटि / saturated monolayer)

Answer

KP (प्रथम कोटि)

Answer

\infty

Question 55

According to the integrated Clausius-Clapeyron equation, the slope of a plot of \ln P versus (1/T) for the liquid-vapor equilibrium is:

Accepted Answer

-\Delta H_{vap} / R

Answer

+\Delta H_{vap} / R

Answer

-\Delta H_{vap} / (2.303 R T)

Answer

+\Delta H_{vap} / (R T)

Question 56

For a rigid diatomic rotor, the selection rule for pure rotational microwave transitions and the uniform spacing between adjacent spectral lines are respectively:

Accepted Answer

\Delta J = \pm 1 and 2B

Answer

\Delta J = \pm 2 and 4B

Answer

\Delta J = 0, \pm 1 and B

Answer

\Delta J = \pm 1 and B

Question 57

The number of normal modes of vibration for carbon dioxide (CO2, linear) and water (H2O, non-linear) molecules respectively are:

Accepted Answer

4 and 3

Answer

3 and 4

Answer

4 and 4

Answer

3 and 3

Question 58

The chiral catalyst system employed in the Sharpless asymmetric epoxidation of allylic alcohols consists of:

Accepted Answer

Ti(O-i-Pr)4, diethyl tartrate (DET), and tert-butyl hydroperoxide (TBHP)

Answer

mCPBA and chiral crown ether

Answer

OsO4, NMO, and cinchona alkaloid

Answer

Rh(PPh3)3Cl and BINAP

Question 59

In the catalytic hydrogenation of alkenes using Wilkinson's catalyst, [RhCl(PPh3)3], the initial activation step is:

Accepted Answer

Dissociation of one PPh3 ligand followed by oxidative addition of H2

Answer

Direct coordination of alkene followed by migratory insertion

Answer

Reductive elimination of HCl

Answer

Homolytic cleavage of Rh-Cl bond

Question 60

The electronic nature of the carbene carbon in a Fischer carbene and a Schrock carbene respectively is:

Accepted Answer

Electrophilic and Nucleophilic (इलेक्ट्रॉनरागी और नाभिकरागी)

Answer

Nucleophilic and Electrophilic (नाभिकरागी और इलेक्ट्रॉनरागी)

Answer

Electrophilic and Electrophilic (दोनों इलेक्ट्रॉनरागी)

Answer

Nucleophilic and Nucleophilic (दोनों नाभिकरागी)

Question 61

In Zeise's salt, K[PtCl3(\eta2-C2H4)], the bonding between Pt and ethylene is described by the Dewar-Chatt-Duncanson model. Metal-to-ligand \pi-backbonding results in:

Accepted Answer

Lengthening of the C–C bond and decrease in the C–C stretching frequency

Answer

Shortening of the C–C bond and increase in the C–C stretching frequency

Answer

No change in the C–C bond distance

Answer

Complete cleavage of the C–C bond to form two methyl groups

Question 62

The fundamental primary photochemical process in a Norrish Type II reaction of carbonyl compounds containing \gamma-hydrogens is:

Accepted Answer

Intramolecular \gamma-hydrogen abstraction via a 6-membered cyclic transition state

Answer

\alpha-Cleavage to generate an acyl radical and an alkyl radical

Answer

Intermolecular hydrogen abstraction from solvent

Answer

[2+2] Cycloaddition to form an oxetane (Paterno-Buchi)

Question 63

The spin-only magnetic moments (\mu_{so}) for octahedral [Ni(H2O)6]2+ and square planar [Ni(CN)4]2− complexes respectively are:

Accepted Answer

2.83 BM and 0.00 BM

Answer

0.00 BM and 2.83 BM

Answer

1.73 BM and 1.73 BM

Answer

3.87 BM and 0.00 BM

Question 64

According to Hückel Molecular Orbital (HMO) theory, the \pi-electron delocalization energy (resonance stabilization energy) of benzene is:

Accepted Answer

-2\beta (or 2|\beta|)

Answer

-4\beta

Answer

-6\beta

Answer

-0.5\beta

Section	Questions	Question Formats	Marking Scheme	Negative Marking	Total Marks
General Aptitude (GA)	10 Qs	MCQs (Verbal Ability & Numerical Reasoning)	5 × 1M + 5 × 2M	1/3rd for 1M; 2/3rd for 2M	15 Marks
Core Chemistry (CY)	55 Qs	MCQs, MSQs, and NAT Questions	25 × 1M + 30 × 2M	Only on MCQs (Zero on MSQ & NAT)	85 Marks
Grand Total	65 Questions	MCQ + MSQ + NAT	—	—	100 Marks

GATE Chemistry Free Mock Test

Attempt Live CBT Mock Test: GATE Chemistry (CY)

🎯 Online CBT Practice Test: GATE Chemical Sciences

GATE Chemistry (CY) Exam Pattern & Question Types

High-Weightage Topics in GATE Chemistry

Sample GATE PYQ with Step-by-Step Solution

Coordination Chemistry: Crystal Field Splitting

Key Strategy for Scoring High in GATE Chemistry

📚 Recommended GATE & CSIR NET Study Resources

Frequently Asked Questions (FAQs)

Is there negative marking for NAT and MSQ questions in GATE Chemistry?

What is the typical qualifying cutoff for GATE Chemistry (CY)?

Can I bring a physical scientific calculator to the GATE examination?

1 Comment

Leave a Reply Cancel reply

Neet Mock Test (Based Upon Previous Papers) MCQ

Hetero-cyclic Chemistry For CSIR UGC NET GATE IIT-JAM