No. of questions -40
Time - 20 min
Negative marking : -0.25 mark
1.
Acid rain is caused due to emission of which of the following into the atmosphere?
2.
Which of the following element is used for vulcanisation of rubber?
3.
The gas which is present in both the natural gas and the bio-gas is-
4.
Which one of the following vitamins is essential for coagulation of blood?
5.
Which one of the following diseases caused through the wound or injury or surfaces of unsterilized surgical instruments?
6.
Plastic bottles are made of a polymer called PET. The expanded form of PET is
7.
The water pollution in river is measured by the dissolved amount of-
8.
The helical structure of protein is stabilized by
9.
Yeast is an important source of-
10.
What is the full form of PVC?
11.
Which among the following is a petroleum wax?
12.
Which one of the following is a synthetic polymer?
13.
The brand name Teflon represents which polymer?
14.
Which of the following is related to the discovery of Nylon?
15.
The alkaloid naturally found in coffee, cocoa and colanut is
16.
Which among the following is false about natural rubber
17.
Which one of the following is a Natural Polymer?
18.
Petroleum is a mixture of-
19.
Which one of the following is non-reducing sugar?
20.
Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhoea?
21.
Which of the following is used as raw material for the manufacture of rayon?
24.
What is the bond between two amino acids in a protein called?
25.
The increasing abundance of green house gases in atmosphere has led to the following effect except-
26.
Which is widely used in the plastic industry for manufacturing Bakelite?
27.
Wax used for making candles is chemically a mixture of-
28.
Bakelite is a polymer of Phenol and
29.
The sugar which is not a disaccharide
30.
Which fibre is used for making bristles of brushes.
31.
Glycogen, Cellulose and starch are the polymers of-
32.
Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?
33.
Consider the following-
1. Nucleic acids
2. Carbohydrates
3. Proteins
A virus is made up of which of the above-Deselect Answer
34.
Which of the following could be used as fuel in propellant of Rockets?
35.
The increasing amount of carbon dioxide in the air is slowly raising, the temperture of the atmosphere, because it absorbs-
36.
In chemistry, soap is a salt of a ............
37.
Physico-chemical characteristics of water in water sources undergo changes due to-
38.
Barbituric acid and its derivatives are well known as-
39.
............. fibre is used in making bullet proof vests.
40.
Deficiency of which one of the following causes xeroph-thalmia-
