Q.1
Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature?
Q.2
0.01 mole of NaOH is added to 10 liters of water. The pH of water changes by
Q.3
Which of the following methods is used in determining the number average molar mass of a macromolecule?
Q.4
Ozone consists of
Q.5
Ozone layer is present in
Q.6
The aprotic solvent is
Q.7
Which of the following has the highest lattice energy?
Q.8
Bleaching action of moist sulphur dioxide is because of its
Q.9
Sulphur dioxide bleaches colouring matter by :
Q.10
Molality of pure water is
Q.11
The presence of ozone in the stratosphere is responsible for
Q.12
Which of the following substance is highly plastic ?
Q.13
Which one of the following is commonly used for pulp bleaching in the paper industry?
Q.14
In upper layer of atmosphere ozone is formed by
Q.15
A solution is
Q.16
The major use of sulphur is in the manufacture of
Q.17
Soldering of two metals is possible because of the property of :
Q.18
Which one of the following is used to restore the colour of old oil paintings ?
Q.19
Natural rubber is a polymer of
Q.20
The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :
Q.21
Which one is the most dense liquid from the below?
Q.22
Percentage of lead in lead pencils is
Q.23
What is a Bakelite ?
Q.24
Natural rubber is the polymer of :
Q.25
The basic chemical building block of natural rubber obtained from trees is
Q.26
The buffer action of blood is due to the presence of
Q.27
Bakelite is a co-polymer of Phenol and
Q.28
Neoprene is prepared by polymerisation of which of the following
Q.29
Neoprene is a polymer of
Q.30
Carborundum is another name of
Q.31
German silver is an alloy of
Q.32
When a lead storage battery is discharged,
Q.33
Which of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?
Q.34
The coordination number of body centered atom in cubic structure is
Q.35
The product, 9-nitroanthracene is obtained from anthracene by the action of
Q.36
Brass gets discoloured in air due to constant exposure in presence of:
Q.37
Which of the following is not present in German silver?
Q.38
The degree of dissociation of an electrolyte depends on
Q.39
In the electroplating of gold, the electrolyte used is
Q.40
What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ?
Q.41
Silver nitrate solution is kept in brown bottles in laboratory because
Q.42
The name of plastic polymer from which combs, toys, bowls etc., can be made, is
Q.43
A polymeric substance used to make parachute is
Q.44
Which of the following is not an addition polymer?
Q.45
The polymer used in making plastic crockery is
Q.46
Silicone is a polymer of
Q.47
The monomers of dacron are
Q.48
Which one of the following does not contain Silver ?
Q.49
Type metal used in printing press is an alloy of
Q.50
In a Carbonyl group a carbon atom makes double bond with
0 h : 0 m : 1 s