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Test: Chemistry Mock Test - 6 - Question 1

In which of the following reactions ethylene is formed?

Test: Chemistry Mock Test - 6 - Question 2

Group reagent for the precipitation of group II basic radicals for the qualitative analysis is

Detailed Solution for Test: Chemistry Mock Test - 6 - Question 2 KSP values of sulphides are low hence precipitated by low [S2-] ion.
HCl (with common H+ ion) decreases ionization of H2S which gives low [S2-].
Hence II group is precipitated. Others with higher KSP values not precipitated.
Test: Chemistry Mock Test - 6 - Question 3

The reagent used for converting benzene to ethyl benzene is

Test: Chemistry Mock Test - 6 - Question 4
100 mL of PH₃ on decomposition produced phosphorus and hydrogen. The change in volume is
Test: Chemistry Mock Test - 6 - Question 5
Which of the following statements does not form a part of Bohr's model of hydrogen atom?
Test: Chemistry Mock Test - 6 - Question 6
Lipids are
Test: Chemistry Mock Test - 6 - Question 7
The boiling point of para nitrophenol is greater than that of ortho nitrophenol, because
Test: Chemistry Mock Test - 6 - Question 8
Heat exchanged in a chemical reaction, at constant temperature and pressure, is called
Test: Chemistry Mock Test - 6 - Question 9
Just before attaining equilibrium by a reversible reaction, it is found that
Test: Chemistry Mock Test - 6 - Question 10
The rate of a reaction, which does not involve gases, does not depend upon
Test: Chemistry Mock Test - 6 - Question 11
The internal energy of a subtance does not depend upon
Test: Chemistry Mock Test - 6 - Question 12
Which of the following is the function of aspirin?
Test: Chemistry Mock Test - 6 - Question 13
n-Propyl alcohol and isopropyl alcohols are examples of
Test: Chemistry Mock Test - 6 - Question 14
The first ionisation potential of Li will be
Detailed Solution for Test: Chemistry Mock Test - 6 - Question 14 As we move from left to right in a period, the ionisation potential increases with increasing atomic number and the ionisation potential keeps on decreasing regularly as we move down a group. Thus the first ionisation potential of Li is less than Be and higher than Na.
Test: Chemistry Mock Test - 6 - Question 15

When SCN- is added to an aqueous solution of Fe(NO3)3, the complex ion produced is

Test: Chemistry Mock Test - 6 - Question 16
Lanthanides and actinides resemble in
Test: Chemistry Mock Test - 6 - Question 17
A smuggler could not carry gold by depositing iron on the gold surface, because
Test: Chemistry Mock Test - 6 - Question 18
Dalton's law of partial pressure is not applicable to
Test: Chemistry Mock Test - 6 - Question 19
The underlining of blast furnace made of
Test: Chemistry Mock Test - 6 - Question 20
Which of the following compounds has the lowest anion to cation size ratio?
Test: Chemistry Mock Test - 6 - Question 21
Which of the following compounds dissolve in both HCl and NaOH solutions
Test: Chemistry Mock Test - 6 - Question 22
A pseudo solid is
Test: Chemistry Mock Test - 6 - Question 23
Which of the following fluorides does not exist ?
Test: Chemistry Mock Test - 6 - Question 24
Hypo is used in photography to
Test: Chemistry Mock Test - 6 - Question 25
One mole of fluorine is reacted with two moles of hot and concentrated KOH. The products formed are KF, H₂O and O₂. The molar ratio of KF, H₂O and O₂ respectively is
Test: Chemistry Mock Test - 6 - Question 26
Which of the following is formed when Mg reacts with dilute HCl?
Test: Chemistry Mock Test - 6 - Question 27

Which of the following species participate in sulphonation of benzene ring?

Test: Chemistry Mock Test - 6 - Question 28
Calculate the normality of 10 volume H₂O₂?
Test: Chemistry Mock Test - 6 - Question 29
A solution of NH₄Cl is
Test: Chemistry Mock Test - 6 - Question 30
How many carbon atoms in the molecule HOOC-(CHOH)₂-COOH are asymmetric?
Test: Chemistry Mock Test - 6 - Question 31
An aromatic amine(A) was treated with alcoholic potash and another compound(Y) when foul smelling gas was formed with formula C₆H₅NC. Y was formed by reacting a compound(Z) with Cl₂ in the presence of slaked lime. The compound(Z) is
Test: Chemistry Mock Test - 6 - Question 32


The final produce 'C' in the above reaction is

Test: Chemistry Mock Test - 6 - Question 33
Weakest acid among the following is
Test: Chemistry Mock Test - 6 - Question 34
The addition of HBr to alkenes in the presence of peroxides is called :
Test: Chemistry Mock Test - 6 - Question 35
Which of the following is odd one out?
Test: Chemistry Mock Test - 6 - Question 36
The most electropositive amongst the alkaline earth metals is
Detailed Solution for Test: Chemistry Mock Test - 6 - Question 36 The electronegativity values for the elements decrease down a group. This is because as we move down the group atomic radius as well as screening effect increases. Thus, barium (Ba) is the least electronegative or most electropositive among the given alkaline earth metals.
Test: Chemistry Mock Test - 6 - Question 37
Which of the following is an example of synthetic polymer?
Test: Chemistry Mock Test - 6 - Question 38
If a sample of an organic substance is heated strongly with soda-lime in a test tube, then ammonia is evolved. It indicates the presence of
Test: Chemistry Mock Test - 6 - Question 39
In which of the following compounds transition metal is in oxidation state zero ?
Test: Chemistry Mock Test - 6 - Question 40
The presence of F-centres in the crystal makes it
Test: Chemistry Mock Test - 6 - Question 41
The number of gram equivalents present in 60 ml of 4 N solution is
Test: Chemistry Mock Test - 6 - Question 42
Optical isomerism is shown by:
Test: Chemistry Mock Test - 6 - Question 43

Liquid benzene burns in oxygen according to 2C6H6(l) + 15O2(g)→ 12CO2(g) + 6H2O(g) . How many litres of oxygen are required for complete combustion of 39 gm of liquid C6H6 (At. wt.of C=12,O=16)

Detailed Solution for Test: Chemistry Mock Test - 6 - Question 43

Volume of 1 mole of a gas at STP =22.4L

Volume of 15 mole of a gas at STP =22.4×15=336L

Molecular weight of benzene =78g

No. of moles of benzene in 39g of benzene =7839​=0.5 mole

From the given reaction,

Volume of oxygen required to burn 2 mole of benzene =336L.

Therefore, 

Volume of oxygen required to burn 0.5 mole of benzene =2336​×0.5=84L

Hence 84 litres of O2​ at STP are needed to complete the combustion of 39g of liquid benzene.

Test: Chemistry Mock Test - 6 - Question 44
In chemisorption, adsorption decreases after increase due to
Test: Chemistry Mock Test - 6 - Question 45
The correct formula of permanganic acid is
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