More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Calcium cyanamide on treatment with steam under pressure gives NH
3
and
Choose an answer
Calcium carbonate
Calcium hydroxide
Calcium oxide
Calcium bicarbonate
Previous
Skip
Next
Question # 2
On heating acetaldehyde with ammonical silver nitrate solution, we get
Choose an answer
CH
3
OH
Silver acetate
HCHO
Silver mirror
Previous
Skip
Next
Question # 3
The principal constituent of pyrex glass
Choose an answer
Zn
B
Pb
Cl
Previous
Skip
Next
Question # 4
The unit rate of a reaction can be increased in general by all the factors except by
Choose an answer
Using a catalyst
Increasing temperature
Increasing the activation energy
Increasing the conc. of reactants
Previous
Skip
Next
Question # 5
In public urinals, we observe some nascent smell. This smell is due to
Choose an answer
Hydrolysis of urea of urine by urease of atmosphere into NH
3
and CO
2
Formation of sulphonic acid by urea of urine
Reaction of CO
2
of atmosphere with urea mononitrate in urine
Hydregen present in air reacts with nitrogen forming NH
3
Previous
Skip
Next
Question # 6
Heating a micture of sodium benzoate and soda lime gives
Choose an answer
Benzene
Methane
Sodium benzoate
Calcium benzoate
Previous
Skip
Next
Question # 7
If the solvent is inflammable for heating purpose we use
Choose an answer
Ice bath
Water bath
Wire gauze
Thermostat
Previous
Skip
Next
Question # 8
Bell metal is an alloy of
Choose an answer
Cu, Zn and Sn
Cu, Zn and Ni
Cu and Zn
Cu and Sn
Previous
Skip
Next
Question # 9
Phenol is heated with CCl
4
and alkaline KOH when salicylic acid is produced. The reaction is known as
Choose an answer
Frledel-Craft reaction
Riemer-Tiemann's reaction
Rosenmund's reaction
Sommelet reaction
Previous
Skip
Next
Question # 10
The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is
Choose an answer
22.4 litres
11.2 litres
1 litre
2.24 litres
Previous
Skip
Next
Question # 11
A cell constant is generally found by measuring the conductivity of aqueous solution of
Choose an answer
BaCl
2
KCl
NaCl
MgCl
2
Previous
Skip
Next
Question # 12
Which of the following reaction is used for detecting presence of carbonyl group?
Choose an answer
Reaction with hydroxylamine
Reaction with hydrazine
Reaction with phenyl hydrazine
All
Previous
Skip
Next
Question # 13
For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to
Choose an answer
Hydrolysis
Oxidation
Hydrogenation
Electrolysis
Previous
Skip
Next
Question # 14
Water (H
2O
) is liquid while hydrogen sulphide (H
2
S) is a gas because
Choose an answer
Water has higher molecular weight
Hydrogen sulphide is a weak acid
Sulphure has high electronegativity than oxygen
Water molecules associate through hydrogen
Previous
Skip
Next
Question # 15
Which of the following alkali metal hydroxides is the strongest base?
Choose an answer
LiOH
NaOH
KOH
CsOH
Previous
Skip
Next
Question # 16
In a crystal a
≠
b
≠
c, a =
γ
= 90
° and
β
≠
90
°. It is
Choose an answer
Monoclinic
Rhombic
Trigonal
Tetragonal
Previous
Skip
Next
Back