AIIMS Chemistry Mock Test - 10 - NEET MCQ

Among the following compounds the one that is polar and has the central atom with sp² hybridisation is

Ethylbenzene with Br₂ in the presence of FeBr₃ gives

In a substitution reaction of C₆H₅Y, the major product is m-isomer, therefore the group Y can be

Which of the following is most reactive towards electrophilic substitution ?

Which of the following gas changes lime water in milky colour?

The compound used as refrigerant is

The rate of reaction is doubled for 10º rise in temperature. The increase in the reaction rate as a result of temperature rise from 10º to 100º is

if the rate of the reaction is equal to the rate constant, the order of the reaction is

Variation of heat of reaction with temperature is known as

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): BF₃ is a weaker Lewis acid than BCl₃.
Reason(R): The planar BF₃ molecule is stabilised to a greater extent than BCl₃ by B-X π bonding.

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): Hard water is more suitable than soft water for laundary and dying.
Reason(R): Hard water can be used in steam boilers.

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): Equal volume of two gases A and B diffuse through a porous pot in 20 and 10 seconds respectively.
Reason (R): Molar mass of A is 80 and B is 20.

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): A universal indicator is useful in all acid base titrations.
Reason(R): Universal indicator has a limited pH range like any other indicator.

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): Lactice acid is optically active.
Reason(R): A symmetry in the organic compound causes optical activity.

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): Ammonolysis of alkyl halides ivolves the reaction between alkyl halides and alcoholic ammonia.
Reason(R): Reaction can be used to prepare only 2° amines.

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): About 50% of energy released during degradation of glucose appears as heat. The remainder is converted to chemical energy and stored in ATP.
Reason(R): ATP accumulate energy and store it for later use.

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): Concentration of H₃O⁺ ion and OH⁻ ion in pure water is same at 25ºC.
Reason(R): Pure water on self ionisation gives little more H₃O⁺ than OH⁻ ions at 25ºC.

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): Caro's acid has S atom in +6 oxidation state.
Reason(R): Caro's acid contains one peroxo O₂^2- group.

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): CO₂ follows PV = nRT equation at a low temperature and high pressure.
Reason(R): CO₂, may behave as an ideal gas when force of attraction among its molecules is negligible.

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): SiO₂ is solid while CO₂ is gas at room temperature.
Reason(R): Si-O bonds are more stronger than C-O bonds.

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): A mixture of the solutions of a weak acid and its sodium salt acts as a good buffer.
Reason(R): The ratio of the sale to acid in the mixture does not change substantially when small amounts of acids or alkalies are added to the buffer.

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): p-dimethylamino-benzaldehyde does not undergo benzoin condensation.
Reason(R): The aldehydic (-CHO) group is meta directing .

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): Each carbon in ethylene molecule is sp² hydridised.
Reason(R): The H-C-H bond angle in ethylene molecule is 120º.

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): Li and Mg form nitride but not Na when heated in air.
Reason(R): Na only forms oxide due to its high affinity for oxygen.

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): Molar conductance increases with dilution for an electrolyte solution while its specific conductance decreases.
Reason(R): The number of ions in one litre of electrolyte increases with dilution.