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AFMC Chemistry Mock Test - 1 - NEET MCQ


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30 Questions MCQ Test AFMC Mock Test Series 2025 - AFMC Chemistry Mock Test - 1

AFMC Chemistry Mock Test - 1 for NEET 2024 is part of AFMC Mock Test Series 2025 preparation. The AFMC Chemistry Mock Test - 1 questions and answers have been prepared according to the NEET exam syllabus.The AFMC Chemistry Mock Test - 1 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AFMC Chemistry Mock Test - 1 below.
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AFMC Chemistry Mock Test - 1 - Question 1

Which of the following compound is obtained on passing ethanol vapours on heated Al₂O₃?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 1

When ethernal vapours are passed on heated , Aluminia ether compound is mainly formed. Therefore, A is the correct option. 

AFMC Chemistry Mock Test - 1 - Question 2

Dow's reaction involves

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 2

On acidic hydrolysis of sodium phenoxide , gives phenol . This process of preparation of phenol from chloro benzene is known as Dow process . The Dow process is an aromatic nucleophilic substitution reaction . The reaction is carried out through active benzyne inter mediate formation

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AFMC Chemistry Mock Test - 1 - Question 3

Which of the following cannot reduce Fehling solution?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 3

CH3COOH (acetic acid) cannot reduce Fehling solution while HCOOH, HCHO and CH3CHO reduce Fehling solution due to the presence of CHO group

AFMC Chemistry Mock Test - 1 - Question 4

Electronic configuration of deuterium atom is

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 4

Deuterium is an isotope of hydrogen and atomic no. of hydrogen is 1 so the electronic configuration of deuterium is 1s1

AFMC Chemistry Mock Test - 1 - Question 5

Vitamin B₁₂ contains

AFMC Chemistry Mock Test - 1 - Question 6

The atomic numbers of elements X, Y, and Z are 19, 21, and 25 respectively. The number of electrons present in the M-shells of these elements follow the order.

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 6

 

19(X) = 1s2 2s2 2p6 3s2 3p6 4s1
so M shell means 3rd shell has 8 electrons
21(Y) = 1s2 2s2 2p6 3s2 3p6 4s2 3d1
so M shell has 9 electrons
25(Z) = 1s2 2s2 2p6 3s2 3p6 4s2 3d5
so M shell has 13 electrons hence the order is Z>Y>X

AFMC Chemistry Mock Test - 1 - Question 7

Which of the followng acts to inhibit lutenizing hormone secretion?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 7

There are two gonadotrophic hormone: follicle stimulating hormone (FSH) and luteinizing hormone (LH), in both males and females. In males, FSH promotes spermatogenesis in the seminiferous tubules, which also release the hormone inhibin. Inhibin acts to inhibit luteinizing hormone secretion by the anterior pituitary gland

AFMC Chemistry Mock Test - 1 - Question 8

Electrolysis of aqueous solution of CH₃COOK gives

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 8

Two methyl free radical combine to form ethane , this electrolysis method(kolbes electrolysis) is used for preparation of even number of carbon containing alkanes.

AFMC Chemistry Mock Test - 1 - Question 9

Which one of the following is the correct set with reference to molecular formula, hybridisation of central atom and shape of the molecule

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 9

In CO2​, O = C = O is the structural formula and C is sp hybridised. CO2​ is linear molecule.
In H2​O, Oxygen is sp3 hybridised and shape is angular. 
In BeCl2​, Be is  sp hybridised with no lone pairs and is a linear molecule.

AFMC Chemistry Mock Test - 1 - Question 10

If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of volumes of reactants and products at the same temperature and pressure would be

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 10

3H2 + N2 → 2NH3
∴ 3V 1V → 2V
Total initial volume = 3V + 1V = 4V
Final volume = 2V
Hence, ratio of initial and final volume will be 2 : 1

AFMC Chemistry Mock Test - 1 - Question 11

The facor which changes equilibrium constant of the reaction A₂(g) + B₂(g) → 2AB(g) is

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 11

Equilibrium constant depends on temperature and is independent of the presence of a catalyst. It is also independent of concentrations, pressures and volumes of reactants and products.

AFMC Chemistry Mock Test - 1 - Question 12

The activation energy of a chemical reaction can be determined by

AFMC Chemistry Mock Test - 1 - Question 13

Half life period of 2nd order reaction is

AFMC Chemistry Mock Test - 1 - Question 14

The first ionisation potentials of four consecutive elements, present in the second period of the periodic table are 8.3, 11.3, 14.5 and 13.6 eV respectively. Which one of the following is the first ionisation potential (in eV) of nitrogen?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 14

As N has extra stable half-filled electronic configuration (1s2 2s2 2p3) , therefore it is difficult to remove an electron from nitrogen and ionisation potential of N is higher.

AFMC Chemistry Mock Test - 1 - Question 15

Which of the following endothermic process is spontaneous?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 15

In the conversion of ice to water and water to water vapour entropy increases at both steps therefore these conversions are spontaneous.

AFMC Chemistry Mock Test - 1 - Question 16

Which of the following is an azo dye?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 16

Orange 1 is red organic compound known as azo dyes.

AFMC Chemistry Mock Test - 1 - Question 17

Identify the correct order in which the ionic radius of the following ions increases:
I) F
II) Na+
III) N3 −

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 17

The size of cation is always smaller than the corresponding atom. This is because, due to the removal of electron (or electrons) from the neutral atom, the number of electrons in the cation decreases, but its nuclear charge remains the same as that of the atom. As a result, the force of attraction by the nucleus on the electrons increases, and the size of the atom decreases. Similarly, the size of anion is always larger than the corresponding atom due to the small effective nuclear charge and large screening effect.

AFMC Chemistry Mock Test - 1 - Question 18

The synthetic product which closely resembles with the natural musk in odour is

AFMC Chemistry Mock Test - 1 - Question 19

In which of the following reaction, hydrogen is acting as an oxidising agent?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 19

An oxidising agent itself undergoes reduction. Its oxidation number decreases. When H2​ is converted to hydride ion H, it itself is reduced and acts as oxidisng agent.

In the following reactions, hydrogen is acting as an oxidising agent.

With lithium to give lithium hydride

H2​+2Li→2LiH

In the following reactions, hydrogen is acting as a reducing agent.

With iodine to give hydrogen iodine

H2​+I2​→2HI

With nitrogen to give ammonia

3H2​+N2​→2NH3

With sulphur to give hydrogen sulphide

H2​+S→H2​S

AFMC Chemistry Mock Test - 1 - Question 20

Which of the following alkanes has neither secondary nor tertiary hydrogens ?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 20

Neopentane is the only compound which has neither secondary nor tertiary hydrogen as the centre carbon's valency is satisfied by 4 other carbons (methyl groups) and not by hydrogen atoms.

AFMC Chemistry Mock Test - 1 - Question 21

The oxidation number of sulphur in Na₂S₄O₆ is

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 21

Oxidation no.of Na = 1
oxidation no. of O = -2
let oxidation no of S = x
2(1) + 4(x) + 6(-2) = 0
2 + 4x - 12 = 0
4x = 10
x = 2.5

AFMC Chemistry Mock Test - 1 - Question 22

Presence of which of the following salts increases the rate of setting of plaster of paris.

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 22

NaCl as it increase the hydration & rearrangment process of the reaction of the constituent materials.

AFMC Chemistry Mock Test - 1 - Question 23

Pyrolusite is /an

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 23

Pyrolusite is manganese dioxide (MnO2) and is an oxide ore of manganese. It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure.

AFMC Chemistry Mock Test - 1 - Question 24

An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of

AFMC Chemistry Mock Test - 1 - Question 25

Lithium and magnesium are similar in their properties due to the same

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 25

Mg and Li have similar properties due to diagonal relationship. They behave similarly due to same polarising power which depends on the ratio of ionic charge to ionic radius, in short they have same ionic potential

AFMC Chemistry Mock Test - 1 - Question 26

Which of the following isomers will have the highest boiling point ?

AFMC Chemistry Mock Test - 1 - Question 27

The compound that decolourises alkaline KMnO₄ is

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 27

Baeyer's reagent is alkaline KMnO4​, it reacts with unsaturated hydrocarbon (alkene, alkyne, etc.) and decolourises its pink colour. And silver nitrate reacts with acidic hydrogen of alkyne and makes white precipitate. Among the given options, methane and ethane are alkanes, so they don't react with either solution.

 Ethylene is unsaturated but doesn't have acidic hydrogen, so it react with Baeyer's reagent but does not react with silver nitrate. Alkyne reacts with both reagents.

AFMC Chemistry Mock Test - 1 - Question 28

Which of the following will not displace hydrogen

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 28

According to standard electrode, Ba,Pb and Sn have lower reduction potential than H+ so, they can reduce it to H2​ but as Hg has higher reduction potential than H+ so, it can not reduce it.

AFMC Chemistry Mock Test - 1 - Question 29

The solubility of AgI in NaI solution is less than that in pure water because

AFMC Chemistry Mock Test - 1 - Question 30

The half life period of a radioactive material is 15 minutes. What percent of radioactivity of that material will remain after 45 minutes?

Detailed Solution for AFMC Chemistry Mock Test - 1 - Question 30

n = 45 / 15 = 3,
Amount left =
1 / 23 [A0] = 1 / 8 [Ao] = 12.5%

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