AIIMS Chemistry Mock Test - 3 - NEET MCQ

Which of the following contains three pairs of electrons in the valence shell?

Amongst the following compounds which can be most easily sulphonated is

The most reactive among the following towards sulphonation is

Freon is used as a

Benzene reacts with CH₃COCl in the presence of AlCl₃ to give

In which of the following pairs, both molecules possess dipole moment?

H₂ dissociates in the presence of light only when Hg vapours are present. It is an example of

Which of the following gas molecule has the maximum specific heat at constant pressure?

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): In a dry cell zinc acts as cathode and carbon rod as anode.
Reason(R): A dry cell has a potential of nearly 1.0 V.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Iron is coated with zinc in galvanisation process.
Reason(R): Zinc works as cathodic protection against rusting of iron.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Respiration is a chemical change which is the opposite of photosynthesis.
Reason(R): During respiration glucose is synthesised in our system .

Rate of formation of SO₃ in the following reaction
2SO₂ + O₂ → 2SO₃
is 100g min⁻¹, Hence, rate of disappearance of O₂ is:

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Cuprous ion is colourless while cupric ion is blue in aqueous solution.
Reason(R): Cuprous ion has unpaired electron while cupric ion don't.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): When CoCl₃.5NH₃ is dissolved in water and treated with excess AgNO₃ solution , it gives only two moles of AgCl.
Reason(R): Third chloro is hydrogen bonded to NH₃.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): All F-S-F angle in SF₄ is less than 180 degrees.
Reason(R): The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Boiling points of cis isomers are higher than trans-isomers.
Reason(R): Dipole moments of cis isomers are higher than trans isomers.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): R-C ≡ O⁺ is more stable than R-C⁺ = O.
Reason(R): Resonance in carbonyl compound provides C⁺ and O^-.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): In titration of strong acid and strong base, we can use phenol-phthalein as indicator.
Reason(R): At the end point pH of solution is in between 8-10.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Carboxylic acids do nt give characteristic reactions of the carbonyl group.

Reason (R): The carbonyl carbon of carboxylic acid is involved in resonance.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Industrial method of preparation of H₂O₂ involves 2-ethylanthra quinol.
Reason(R): Process becomes cyclic.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): [Pt(NH₂)₂Cl₂] is tetrahedral.
Reason(R): The oxidation state of platinum is +2.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The overall reactivity of acid derivative follows the order:
Acetyl Chloride > Acid Anhyaride > Acid ester > Acid Amide.
Reason(R): Reactivity order as per the basicity order of leaving group Cl^- > RCOO^- > RO ^- > NH₂^-.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): All enzymes are proteins but all proteins are not enzymes.
Reason(R): Keratin is an enzymes.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Narcotics are opium derivatives.
Reason(R): Narcotic is an analgesic.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Conc. H₂SO₄ reacts with KCl to give Cl₂ gas.
Reason(R): HCl cannot be oxidising by H₂SO₄.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Ethanol is liquid but dimethyl ether is a gas.
Reason(R): In ethanol, carbon as well as oxygen are sp³ hybridised.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The mobility of sodium ion is lower than that of potassium ion.
Reason(R): The ionic mobilities depend upon the effective radius of the ion.