Sample paper · NEET Preparation Chemistry

Chemistry · Sample Paper 1

NEET-UG pattern — 45 MCQs on the full Class 11 + 12 Chemistry syllabus, 4 marks each.

45 questions · 180 marks · 45 minutes

Timed, marked on submit · free with an account

General instructions

This paper has 45 multiple-choice questions, each with one correct answer. All are compulsory.
Section A — Q1 to Q22: Class 11 syllabus. Section B — Q23 to Q45: Class 12 syllabus (including the p-block).
Each correct answer earns 4 marks. In the real NEET a wrong answer costs 1 mark; this practice paper does not deduct marks.
Time: 45 minutes — the share of Chemistry in the 180-minute NEET paper.

Section A · Class 11 syllabus

Questions 1–22, 4 marks each.

Question 14 marks
The number of molecules in 9 g of water is
1. A. $6.022\times10^{23}$
2. B. $3.011\times10^{23}$
3. C. $1.5\times10^{23}$
4. D. $9\times10^{23}$
Question 24 marks
The molarity of a solution containing 4 g NaOH in 500 mL is
1. A.0.1 M
2. B.0.2 M
3. C.0.4 M
4. D.0.8 M
Question 34 marks
The number of radial nodes in a 3p orbital is
1. A.0
2. B.1
3. C.2
4. D.3
Question 44 marks
Which electronic configuration of chromium is correct?
1. A.[Ar] $3d^44s^2$
2. B.[Ar] $3d^54s^1$
3. C.[Ar] $3d^6$
4. D.[Ar] $3d^34s^24p^1$
Question 54 marks
Which has the largest radius?
1. A. $Na^+$
2. B. $Mg^{2+}$
3. C. $F^-$
4. D. $O^{2-}$
Question 64 marks
Which element has the most negative electron gain enthalpy?
1. A.F
2. B.Cl
3. C.O
4. D.S
Question 74 marks
The hybridisation of the central atom in $SF_6$ is
1. A. $sp^3$
2. B. $sp^3d$
3. C. $sp^3d^2$
4. D. $dsp^2$
Question 84 marks
Which molecule has a zero dipole moment?
1. A. $NH_3$
2. B. $H_2O$
3. C. $CO_2$
4. D. $SO_2$
Question 94 marks
Which species is paramagnetic?
1. A. $N_2$
2. B. $O_2$
3. C. $F_2$
4. D. $C_2^{2-}$
Question 104 marks
For a reaction $\Delta H = +40$ kJ and $\Delta S = +100$ J K $^{-1}$ . It becomes spontaneous above
1. A.40 K
2. B.400 K
3. C.4000 K
4. D.100 K
Question 114 marks
Which is an extensive property?
1. A.temperature
2. B.density
3. C.enthalpy
4. D.pressure
Question 124 marks
For $N_2 + 3H_2 \rightleftharpoons 2NH_3$ , $K_p$ and $K_c$ are related by
1. A. $K_p = K_c(RT)^{-2}$
2. B. $K_p = K_c(RT)^2$
3. C. $K_p = K_c$
4. D. $K_p = K_c(RT)$
Question 134 marks
The pH of a $10^{-2}$ M NaOH solution is
1. A.2
2. B.10
3. C.12
4. D.14
Question 144 marks
The solubility of $AgCl$ is $10^{-5}$ mol L $^{-1}$ . Its $K_{sp}$ is
1. A. $10^{-5}$
2. B. $10^{-10}$
3. C. $2\times10^{-10}$
4. D. $10^{-15}$
Question 154 marks
The oxidation number of Mn in $KMnO_4$ is
1. A.+4
2. B.+6
3. C.+7
4. D.+2
Question 164 marks
In $2H_2O_2 \to 2H_2O + O_2$ , hydrogen peroxide
1. A.is only oxidised
2. B.is only reduced
3. C.undergoes disproportionation
4. D.is a catalyst
Question 174 marks
The most stable carbocation is
1. A. $CH_3^+$
2. B. $CH_3CH_2^+$
3. C. $(CH_3)_2CH^+$
4. D. $(CH_3)_3C^+$
Question 184 marks
The IUPAC name of CH₃–CH(CH₃)–CH₂–CH₃ is
1. A.isopentane
2. B.2-methylbutane
3. C.3-methylbutane
4. D.pentane
Question 194 marks
Which is an electrophile?
1. A. $NH_3$
2. B. $OH^-$
3. C. $BF_3$
4. D. $CN^-$
Question 204 marks
Ozonolysis of 2-butene gives
1. A.methanal only
2. B.ethanal only
3. C.propanal and methanal
4. D.propanone
Question 214 marks
Which is aromatic?
1. A.cyclobutadiene
2. B.benzene
3. C.cyclooctatetraene
4. D.cyclohexene
Question 224 marks
Which group directs electrophiles to the meta position?
1. A. $-OH$
2. B. $-CH_3$
3. C. $-NO_2$
4. D. $-Cl$

Section B · Class 12 syllabus

Questions 23–45, 4 marks each.

Question 234 marks
Which aqueous solution has the highest boiling point?
1. A.0.1 M glucose
2. B.0.1 M NaCl
3. C.0.1 M $CaCl_2$
4. D.0.1 M urea
Question 244 marks
A solution showing positive deviation from Raoult's law forms
1. A.a maximum-boiling azeotrope
2. B.a minimum-boiling azeotrope
3. C.an ideal solution
4. D.no azeotrope
Question 254 marks
$E^\circ$ for $Zn^{2+}/Zn$ is −0.76 V and for $Cu^{2+}/Cu$ is +0.34 V. The $E^\circ_{cell}$ of the Daniell cell is
1. A.0.42 V
2. B.1.10 V
3. C.−1.10 V
4. D.0.76 V
Question 264 marks
The charge needed to deposit 1 mol of Al from Al³⁺ is
1. A.1 F
2. B.2 F
3. C.3 F
4. D.6 F
Question 274 marks
For a zero-order reaction, the half-life is
1. A.independent of initial concentration
2. B.proportional to initial concentration
3. C.inversely proportional to it
4. D.constant at 0.693/k
Question 284 marks
A first-order reaction has k = 0.0693 min⁻¹. Its half-life is
1. A.1 min
2. B.10 min
3. C.100 min
4. D.6.93 min
Question 294 marks
Which hydride is the strongest reducing agent?
1. A. $NH_3$
2. B. $PH_3$
3. C. $AsH_3$
4. D. $BiH_3$
Question 304 marks
The shape of XeF₄ is
1. A.tetrahedral
2. B.square planar
3. C.octahedral
4. D.see-saw
Question 314 marks
Which is the strongest acid?
1. A.HF
2. B.HCl
3. C.HBr
4. D.HI
Question 324 marks
The basicity of $H_3PO_3$ is
1. A.1
2. B.2
3. C.3
4. D.0
Question 334 marks
The magnetic moment of $Fe^{3+}$ (spin-only) is about
1. A.3.87 BM
2. B.4.90 BM
3. C.5.92 BM
4. D.2.83 BM
Question 344 marks
Lanthanoid contraction is due to
1. A.poor shielding by 4f electrons
2. B.poor shielding by 5d electrons
3. C.increase in atomic mass
4. D.the inert pair effect
Question 354 marks
The oxidation state of Co in $[Co(NH_3)_5Cl]Cl_2$ is
1. A.+1
2. B.+2
3. C.+3
4. D.+6
Question 364 marks
Which ligand is ambidentate?
1. A. $NH_3$
2. B. $NO_2^-$
3. C. $H_2O$
4. D.en
Question 374 marks
SN1 reactions are fastest for
1. A.primary halides
2. B.secondary halides
3. C.tertiary halides
4. D.methyl halides
Question 384 marks
Chlorobenzene is less reactive than chloroethane towards nucleophiles because of
1. A.resonance in chlorobenzene
2. B.its higher mass
3. C.hydrogen bonding
4. D.its non-polarity
Question 394 marks
Which is the most acidic?
1. A.phenol
2. B.p-nitrophenol
3. C.p-cresol
4. D.ethanol
Question 404 marks
Lucas reagent is
1. A.anhydrous $ZnCl_2$ + conc. HCl
2. B. $Zn$ /HCl
3. C. $KMnO_4$
4. D.Fehling's solution
Question 414 marks
Which does not give the Cannizzaro reaction?
1. A.HCHO
2. B.C₆H₅CHO
3. C.CH₃CHO
4. D.(CH₃)₃CCHO
Question 424 marks
Clemmensen reduction converts a ketone into
1. A.an alcohol
2. B.an alkane
3. C.an aldehyde
4. D.an acid
Question 434 marks
Which amine gives the carbylamine test?
1. A.dimethylamine
2. B.trimethylamine
3. C.aniline
4. D.N-methylaniline
Question 444 marks
The strongest base in aqueous solution is
1. A. $NH_3$
2. B. $CH_3NH_2$
3. C. $(CH_3)_2NH$
4. D. $C_6H_5NH_2$
Question 454 marks
Which is a non-reducing sugar?
1. A.glucose
2. B.maltose
3. C.lactose
4. D.sucrose

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