When the difference in electro-negativity is large, the resulting bond i;
(a) Metallic bond
(b) Covalent bond
(c) Ionic bond
(d) Non-polar bond
Answer: C
Glass is mostly produced by heating to about 1,400 degree Centigrade
(a) Limestone and soda ash
(b) Soda ash and silica
(c) Silica and limestone
(d) Limestone, silica and soda ash
Answer: D
Fats and their derivatives occurring in living systems are collectively known as
(a) Carbohydrates
(b) Proteins
(c) Lipids
(d) Vitamins
Answer: C
Which of the following elements has 92 as the atomic number ?
(a) Lead
(b) Platinum
(c) Thorium
(d) Uranium
Answer: D
Carbon dioxide is
(a) An acidic oxide
(b) A basic oxide
(c) A neutral oxide
(d) An atmospheric oxide
Answer: A
Which of the following groups of elements finds extensive application in the transistor industry?
(a) Carbon and Platinum
(b) Silicon and Germanium
(c) Iridium and Germanium
(d) Tungsten and Platinum
Answer: B
The process of union of two or more molecules of a substance to form a large single molecule is called
(a) Diffusion
(b) Synthesis
(c) Fusion
(d) Polymerisation
Answer: D
Tritium is composed of
(a) One proton, two electrons and one neutron .
(b) Two protons and one electron
(c) One proton, one electron and one neutron
(d) One proton, one electron and two neutrons
Answer: D
Nitrolim is a mixture of
(a) Nitrogen and aluminium
(b) Calcium cyanamide and coke
(c) Calcium and nitrogen
(d) Calcium carbide and nitrogen
Answer: D
Which one of the following is the most favourable condition for the reaction of nitrogen with hydrogen to form ammonia?
(a) High pressure, high temperature and high concentration of reactants
(b) High pressure, low temperature and high concentration of reactants
(c) High pressure, low temperature and low concentration of reactants
(d) Low temperature, low pressure and high concentration of reactants
Answer: B
(a) Metallic bond
(b) Covalent bond
(c) Ionic bond
(d) Non-polar bond
Answer: C
Glass is mostly produced by heating to about 1,400 degree Centigrade
(a) Limestone and soda ash
(b) Soda ash and silica
(c) Silica and limestone
(d) Limestone, silica and soda ash
Answer: D
Fats and their derivatives occurring in living systems are collectively known as
(a) Carbohydrates
(b) Proteins
(c) Lipids
(d) Vitamins
Answer: C
Which of the following elements has 92 as the atomic number ?
(a) Lead
(b) Platinum
(c) Thorium
(d) Uranium
Answer: D
Carbon dioxide is
(a) An acidic oxide
(b) A basic oxide
(c) A neutral oxide
(d) An atmospheric oxide
Answer: A
Which of the following groups of elements finds extensive application in the transistor industry?
(a) Carbon and Platinum
(b) Silicon and Germanium
(c) Iridium and Germanium
(d) Tungsten and Platinum
Answer: B
The process of union of two or more molecules of a substance to form a large single molecule is called
(a) Diffusion
(b) Synthesis
(c) Fusion
(d) Polymerisation
Answer: D
Tritium is composed of
(a) One proton, two electrons and one neutron .
(b) Two protons and one electron
(c) One proton, one electron and one neutron
(d) One proton, one electron and two neutrons
Answer: D
Nitrolim is a mixture of
(a) Nitrogen and aluminium
(b) Calcium cyanamide and coke
(c) Calcium and nitrogen
(d) Calcium carbide and nitrogen
Answer: D
Which one of the following is the most favourable condition for the reaction of nitrogen with hydrogen to form ammonia?
(a) High pressure, high temperature and high concentration of reactants
(b) High pressure, low temperature and high concentration of reactants
(c) High pressure, low temperature and low concentration of reactants
(d) Low temperature, low pressure and high concentration of reactants
Answer: B