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Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Class 12 MCQ


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30 Questions MCQ Test - Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22)

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) for Class 12 2024 is part of Class 12 preparation. The Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) questions and answers have been prepared according to the Class 12 exam syllabus.The Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) MCQs are made for Class 12 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) below.
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Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 1

The IUPAC name of isobutyl alcohol is :

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 1

The structural formula of isobutyl alcohol is

IUPAC name : 2 methyl propan-1-ol

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 2

Formation of ortho hydroxy benzoic acid from phenol using sodium hydroxide is:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 2

Phenoxide ion generated by treating phenol with sodium hydroxide. Further it undergoes electrophilic substitution with carbon dioxide to form ortho hydroxybenzoic acid as the main reaction product.

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Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 3

Glucose and fructose are prepared in equal amount when:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 3

It is a method of preparation of glucose form sucrose i.e. cane sugar.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 4

Which is true for crystalline solids:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 4

The other three are characteristics of isotropic solids.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 5

All the elements of group 15 form EX3 and EX5 except:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 5

Nitrogen does not form pentahalide due to non-availability of the d orbitals in its valence shell.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 6

When constituent particles are present only on the corner positions of a unit cell:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 6

The others are the type of centred unit cell which have one or more constituent particles present at positions other than corners in addition to those at corners.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 7

Chloroform mixed with nitrogen gas is a type of which solution:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 7

Chloroform mixed with nitrogen gas is an example of Liquid + gas solution.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 8

What is incorrect about fibrous proteins:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 8

It is a characteristic of globular protein.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 9

Name the following structures of proteins: 

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 9

The structure is -primary, quaternary, tertiary and secondary.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 10

Which of the following is not a haloalkane ?

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 10

2-Chloro acetophenone is a substitute of acetophenone. It is phenacyl Chloride and use as a tear gas.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 11

In solid alkali halides, the appearance of colour is due to:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 11

The colour is due to excitation of electrons (at anionic site) when they absorb energy from the visible light falling on the crystals.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 12

Supersonic jet aeroplanes are responsible for depleting the conc. of ozone layer because:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 12

Nitrogen oxides emitted from the exhaust systems of supersonic jet aeroplanes is slowly depleting the concentration of the ozone layer in the upper atmosphere as nitrogen oxides (particularly nitrogen monoxide) combine very rapidly with ozone.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 13

Which of the following does not react with oxygen directly ?

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 13

Platinum (Pt) is an inert metal and does not react very easily. All other elements, Zn, Ti and Fe, are quite reactive.
Hence, Pt does not react with oxygen directly.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 14

In ______the domains are oppositely oriented and cancel out each other’s magnetic moment :

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 14

MnO is diamagnetic in nature.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 15

Which of the following is not a chiral compound :

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 15

3-bromopentane, due to presence of two same groups is not chiral. The central carbon is attached to two ethyl groups.

C2H5−CH(Br)−C2H5

All other compound contains chiral centre.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 16

For any solution the partial vapour pressure of each volatile component in the solution is directlyproportional to its_______________.

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 16

According to Raoult’s law, for any solution the partial vapour pressure of each volatile component in the solution is directly proportional to its mole fraction.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 17

The value of van’t Hoff factors for K2SO4, NaCl and KCl is :

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 17

K2SO4 ionizes to give 2K+ and
SO4 - ions (total 3 ions). NaCl gives Na+ and
Cl- ions(total 2 ions) KCl gives K+ and Clions
(total 2 ions).

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 18

Many wet gases are dried by passing through sulphuric acid, this shows sulphuric acid is:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 18

Sulphuric acid has strong affinity for water as moisture in gases that act as a strong dehydrating agent.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 19

Choose the molecules in which carbon atom marked with asterisk (*) is asymmetric ?

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 19

Asymmetric carbon atoms are those which have four different groups attached to carbon atom.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 20

Calculate the number of atoms per unit cell of iron crystal lattice if the edge length is 268 pm anddensity is 7. 86 g / cm3: [Molar mass of Fe = 56 g / mol].

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 20

a = 268 pm = 268x10-10 cm
d = 7.86 g cm-3
M =56g m of-1
NA = 6.022×1023 mol-1
n = ?

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 21

How much amount of NaCl in gram will be required for the preparation of its 5,6 w/v 1000 mlaqueous solution ?

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 21

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 22

Fuming nitric acid is a mixture of:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 22

Fuming acid =HNO3 + NO2

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 23

The presence of halogen atom in the haloarenes directs the incoming substituent in electrophilessubstitution reactions to:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 23

∴ Electron density is highest at ortho and para positions, so, halogen atom (x) directs the incoming substituent in electrophilic substitution reaction to ortho and para positions.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 24

Give the major product in the following reaction:

C2H5Br + alc. AgCN → Product

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 24

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 25

Glucose is converted into ethanol in the persence of:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 25

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 26

Which allotropic form of sulphur is most stable at room temperature:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 26

Rhombic sulphur consists of 8 sulphur atoms arranged in an octahedral shape which form the most stable structure that doesn’t change gradually.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 27

The number of sulphur molecules in monoclinic and rhombic sulphur:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 27

Both rhombic and mono clinic sulphur have S8 molecules which is the most allotropic form.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 28

Sulphur dioxide when passed through water forms:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 28

SO2(g) + H2O(l) ⇋ H2SO3(l)

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 29

Choose the correct answer from the options given:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 29

The given structure (i), (ii) and (iii) is showing Sulphurous acid, pyro sulphuric acid, sulphuric acid respectively.

Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 30

Sulphuric acid is used to manufacture more volatile acids from their corresponding salts due to its:

Detailed Solution for Test: Class 12 Chemistry: CBSE Sample Question Paper- Term I (2021-22) - Question 30

Sulphuric acid have high boiling point and low volatility that combines with salt like NaCl to form volatile acids like HCl and HNO3.

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