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Test: Chemistry Mock Test - 3


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Test: Chemistry Mock Test - 3 - Question 1

Which of the following cannot give iodometric titration?

Test: Chemistry Mock Test - 3 - Question 2

IUPAC name of is

Test: Chemistry Mock Test - 3 - Question 3

The reacting ion in the nitration of benzene is

Test: Chemistry Mock Test - 3 - Question 4
The significant figures in 3400 are
Test: Chemistry Mock Test - 3 - Question 5

Which of the following has maximum unpaired d-electrons?

Test: Chemistry Mock Test - 3 - Question 6
phospholipids are esters of glycerol with
Test: Chemistry Mock Test - 3 - Question 7
The shape of IF7 molecule is
Test: Chemistry Mock Test - 3 - Question 8
If ammonium chloride is dissolved in water, the solution becomes cold. The change is
Test: Chemistry Mock Test - 3 - Question 9
when a catalyst is added to a reversible reaction in equilibrium state, the value of equilibrium constant
Test: Chemistry Mock Test - 3 - Question 10

A Carnot engine receives heat at 227oC and exhausts at 47oC. If its efficiency is to be increased by 5 % then the engine should receive heat at

Test: Chemistry Mock Test - 3 - Question 11
A zero order reaction is one whose rate is independent of
Test: Chemistry Mock Test - 3 - Question 12
Detergents are prepared by the action of H₂SO₄ followed by neutralization by starting with
Test: Chemistry Mock Test - 3 - Question 13
The number of optical isomers of the compound CH₃CHBrCHBrCOOH is
Test: Chemistry Mock Test - 3 - Question 14

Which one of the following would you expect to have highest electronegativity?

Detailed Solution for Test: Chemistry Mock Test - 3 - Question 14

The electronegativity values for the representative elements increase along a period from left to right. Sulphur is situated at the left of the periodic table. Thus it has highest electronegativity among the given elements. The order of electronegativity:
Mg (1.2) < B (2.0) < Te (2.01) < S (2.5) .

Test: Chemistry Mock Test - 3 - Question 15
The number of unpaired electrons in Ni(CO)₄ is
Test: Chemistry Mock Test - 3 - Question 16

Cerium (Z=58) is an important member of lanthanoids. which of the following statement about cerium is incorrect?

Test: Chemistry Mock Test - 3 - Question 17

In the reaction
Cu(s) + 2Ag⁺(aq) → Cu2⁺(aq) + 2Ag(s),
the reduction half cell reaction is

Test: Chemistry Mock Test - 3 - Question 18
Zone refining process is used for the
Test: Chemistry Mock Test - 3 - Question 19
In a closed flask of 5 litres, 1.0 gm H₂ is heated from 300 to 600 K, which statement is not correct ?
Test: Chemistry Mock Test - 3 - Question 20

When CO is passed over solid NaOH heated to 200oC, it forms

Test: Chemistry Mock Test - 3 - Question 21
Which one of the following is used to remove silicon dioxide in the Serpeck's process of purification of bauxite?
Test: Chemistry Mock Test - 3 - Question 22

The structure and hybridization of Si(CH₃)₄ is

Test: Chemistry Mock Test - 3 - Question 23
Among the following oxides, the least acidic is
Test: Chemistry Mock Test - 3 - Question 24
By which of the following SO₂ is formed ?
Test: Chemistry Mock Test - 3 - Question 25
Which one of the following can be purified by sublimation?
Test: Chemistry Mock Test - 3 - Question 26

Bleaching action of bleaching powder is due to the liberation of

Detailed Solution for Test: Chemistry Mock Test - 3 - Question 26

On account of the formation of nascent oxygen, it shows oxidising and bleaching properties.

 

2CaOCl2​+H2​SO4​⟶CaCl2​+CaSO4​+2HClO

 

HClO⟶HCl+(O)

 

Coloured Matter +(O)⟶ Colourless product 

 

Hence, option C is correct.

Test: Chemistry Mock Test - 3 - Question 27
Benzene is obtained by fractional distillation of
Test: Chemistry Mock Test - 3 - Question 28
Hydrogen from HCl can be prepared by
Test: Chemistry Mock Test - 3 - Question 29
Which of the following is a strong electrolyte?
Test: Chemistry Mock Test - 3 - Question 30
A compound whose molecule is superimposable on its mirror image inspite of the presence of chiral centres, is called
Test: Chemistry Mock Test - 3 - Question 31

CO₂ on reaction with ethyl magnesium bromide gives

Detailed Solution for Test: Chemistry Mock Test - 3 - Question 31

Answer:

Ethyl bromide does not react with CO2 but Ethyl Magnesium Bromide (Grignard Reagent) does.

CH3CH2MgBr + CO2 (dry ice) ⇒ CH3CH2COOH (acetic acid)

in presence of ether

Explanation:

Ethyl magnesium bromide (grignard reagent) reacts with solid CO2 (dry ice) in ether solvent, to form acetic acid.

Test: Chemistry Mock Test - 3 - Question 32
Which of the following compounds gives blood red coloration when its Lassaigne's extract is treated with alkali and ferric chloride?
Test: Chemistry Mock Test - 3 - Question 33
Rosenmund's reduction of an acyl chlroide gives
Test: Chemistry Mock Test - 3 - Question 34

Test: Chemistry Mock Test - 3 - Question 35
Which of the following compound turns black on addition of NH₄OH?
Test: Chemistry Mock Test - 3 - Question 36
All the elements in a Group in the Periodic table have the same
Detailed Solution for Test: Chemistry Mock Test - 3 - Question 36 In the modern periodic table,there are eighteen vertical columns called groups. Each group consists of a number of elements having the same number of electrons in outer shell and the same electronic configuration of the outermost shell (valence shell).
Test: Chemistry Mock Test - 3 - Question 37
The product of addition polymerization reaction is
Test: Chemistry Mock Test - 3 - Question 38

An organic compound having molar mass 60 g mol⁻1 found to contain C = 20%,H = 6.67% and N = 46.67% ,rest being oxygen.on heating it gives NH₃ along with solid residue.The solid residue gives violet colour with alkaline copper sulphate solution.The compound is

Test: Chemistry Mock Test - 3 - Question 39

Oxidation number of S in S₂O₃2⁻ is

Test: Chemistry Mock Test - 3 - Question 40
Coordination number for Cu is
Detailed Solution for Test: Chemistry Mock Test - 3 - Question 40 Coordination number of ccp (cubic close packing) arrangement is 12
Copper (cu) has ccp structure hence coordination no is 12
Test: Chemistry Mock Test - 3 - Question 41
How much water is needed to dilute 10 ml of 10 N hydrochloric acid to make it exactly decinormal (0.1N) ?
Test: Chemistry Mock Test - 3 - Question 42
The conversion of d-form of an optically active compound into l-form of the same or of different compound or vice-versa is known as:
Test: Chemistry Mock Test - 3 - Question 43
Sulphur forms the chlorides S2Cl2 and SCl2. The equivalent mass of sulphur in SCl2 is 16 g/mole. Therefore the equivalent mass of sulphur in S2Cl2 is
Test: Chemistry Mock Test - 3 - Question 44
In the hydrogenation of oils the catalyst used is
Test: Chemistry Mock Test - 3 - Question 45
Which one of the following pairs of substances on reaction will not evolve H₂ gas?
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