Objective General Knowledge

Q. Chlorine is not used in the preparation of
1 hydrochloric acid
2 phosgene
3 phosphene
4 bleaching powder
Ans: 3

Q. Chemically, an enzyme is a
1 lipid
2 vitamin
3 protein
4 carbohydrate
Ans: 3

Q. Carcinogenic chemicals are expected to cause
1 allergy
2 tuberculosis
3 cancer
4 anaemia
Ans: 3

Q. Carbon occurs in nature in the purest form as
1 Diamond
2 Graphite
3 Carbon black
4 Coal
Ans: 1

Q. Atomic number of an element gives
1 the number of electrons in its atom
2 the number of nucleons in its atom
3 the weight of the atom of the element
4 the total number of elementary particles in its atom
Ans: 1

Q. An element with atomic number 36 belongs to the
1 s-block
2 p-block
3 d-block
4 f-block
Ans: 2

Q. An element that can form a pentoxide is
1 nitrogen
2 boron
3 phosphorus
4 aluminium
Ans: 3

Q. An element found in all organic compounds is
1 nitrogen
2 carbon
3 calcium
4 none of them
Ans: 2

Q. Amino acids are the buliding blocks of
1 Vitamins
2 Starch
3 Proteins
4 Lipids
Ans: 3

Q. Aluminium is extracted from bauxite
1 by reduction with carbon
2 by reduction with Mg
3 by reduction with co
4 by electrolysis in molten cryolite
Ans: 4