AIIMS Chemistry Mock Test - 8 - NEET MCQ

The number of atoms contained in 11.2 L of SO₂ at S.T.P. are

Aromatic compounds undergo

The structure of benzene is

Freon is used as a

The compound used as refrigerant is

Among the following, the paramagnetic compound is

The deecomposition of hydrogen peroxide 2H₂O₂ → 2H₂O + O₂ is a

An increase of temperature from 500 K to 510 K increases the number of bimolecular collisions by about__

Which one of the following statement is false?

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): Ferrocene is an example of π-complex.
Reason(R): Iron and C₅H₅ ring double bond.

In the following question, a Statement-1 is given followed by a corresponding Statement-2 just below it. Read the statements carefully and mark the correct answer-

Statement-1: Glucose gives a reddish-brown precipitate with Fehling’s solution.
Statement-2: Reaction of glucose with Fehling’s solution gives CuO and gluconic acid.

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): For the reaction
2N₂O₅ → 4NO₂ + O₂ ,
Rate = K[N₂O₅].
Reason(R): Rate of decomposition of N₂O₅ is determined by slow step.

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): One mole of oxygen gas contains 2 x 6.023 x 10²³ atoms of oxygen , whereas one mole of organ contains 6.023 x 10²³.
Reason(R): Oxygen is a diatomic gas, O₂ whereas argon is a monatomic gas.

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): Oils contain higher proportion of glycerides of saturated fatty acids.
Reason(R): Oils contain a higher percentage of olein.

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): LiCl is predominantly covalent in character.
Reason(R): Electronegativity difference between Li and Cl is too small.

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): Para-hydrogen has lower internal energy and is favoured at high temperature.
Reason(R): The thermal conductivity of para-hydrogen is lesser than that of ortho-hydrogen.

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): Benzene undergoes many electrophilic substitution reactions like acetylation.
Reason(R): The benzene ring rotates freely to form substituted compounds.

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): Phenol reacts with chloroform and aqueous alkali followed by acid hydrolysis to yield salicylaldehyde.
Reason(R): It involves the formation of carboncations.

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): During an adiabatic process, heat energy is not exchanged between system and surroundings.
Reason(R): The temperature of gas increases when it undergoes an adiabatic expansion.

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): KMnO₄ is purple in colour due to charge transfer.
Reason(R): MnO₄^- ion is tetrahedral in shape.

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 an acid-base titration involving strong base and a weak acid. methyl orange can be used as an indicator.
Reason(R):Methyl orange changes its colour in the pH range 3 to 5.

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): Cu²⁺ is less stable than Cu⁺.
Reason(R): cu⁺ is diamagnetic .

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): Lower members of aldehydes and ketones are miscible with water.
Reason(R): Solubility of carbonyl compounds increases with increase in molecular weight.

In the following question, a Statement-1 is given followed by a corresponding Statement-2 just below it. Read the statements carefully and mark the correct answer-
Statement-1:
Alkali metals dissolve in liquid ammonia to give blue solutions.
Statement-2:
Alkali metals in liquid ammonia give solvated species of the type [M(NH₃)_n]⁺ (M = alkali metals).

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): Trans[Co(en)₂Br₂]Cl does not show optical activity.
Reason(R): Above coplex can exhibit ionisation isomerism.

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):Nitrophenol is stronger acid than phenol.
Reason(R):Nitro group is electron withdrawing group and hence stabilises the anion formed.

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): Alkylation of benzene by Friedal-Craft reaction gives polyalkylated compounds.
Reason(R): The ring gets activated for further substitution after the introduction of one alkyl group.