Q.1:- Hydrolysis of cane sugar is called ?
- Saponification
- Hydration
- Inversion
- Esterification
Ans:- (c) Inversion
Q.2:- Iodine test used to detect ?
- Cholesterol
- Fat
- Protein
- Carbohydrate
Ans:- (d) Carbohydrate
Q.3:- Sulphur dioxide bleaches colouring matter by ?
- Decomposition
- Oxidation
- Reduction
- Dehydration
Ans:- (c) Reduction
Q.4:- Which element is most abundant on Earth’s crust ?
- Calcium
- Carbon
- Silicon
- Oxygen
Ans:- (d) Oxygen
Q.5:- Nuclear fission is caused by the impact of ?
- Neutrons
- Protons
- Deuteron
- Electron
Ans:- (b) Protons
Q.6:- Which type of bonding occurs in NH4Cl?
- Ionic
- Covalent
- Co-ordinate
- All
Ans:- (d) All
Q.7:- What is the oxidation number of Sulphur in SO42- ion ?
- -2
- +2
- +6
- 8
Ans:- (c) +6
Q.8:- The word ‘Insolation’ means ?
- Matters which insulates
- Incoming solar radiation
- Insoluble matters
- None of the above
Ans:- (b) Incoming solar radiation
Q.9:- Neutron was discovered by ?
- J.J. Thomson
- Chadwick
- Rutherford
- Priestley
Ans:- (b) Chadwick
Q.10:- Electromagnetic radiation with maximum wavelength is ?
- Ultraviolet
- Radio Waves
- X-Rays
- Infrared
Ans:- (b) Radio Waves
Q.11:- In isotopes the number of neutrons are ?
- Same
- Different
- Both
- None
Ans:- (b) Different
Q.12:- The phenomenon of radioactivity was discovered in 1898 A.D. by ?
- Henri Bacquerel
- J.J. Thomson
- Marie Curie
- Pierre Curie
Ans:- (a) Henri Becquerel
Q.13:- What was the fissionable material used in the bombs dropped at Nagasaki (Japan) in the year 1945 ?
- Sodium
- Potassium
- Plutonium
- Uranium
Ans:- (c) Plutonium
Q.14:- Formation of anion occurs by ?
- Loss of neutrons
- Gain of protons
- Gain of electrons
- None
Ans:- (c) Gain of electrons
Q.15:- Formation of cation occurs by ?
- Gain of electrons
- Loss of electrons
- Gain of protons
- Loss of protons
Ans:- (b) Loss of electrons
Q.16:- Which of the following is the pure element ?
- Glass
- Cement
- Sodium
- None of these
Ans:- (c) Sodium
Q.17:- Who among the following proposed that atom is indivisible ?
- Dalton
- Berzelius
- Rutherford
- Avogadro
Ans:- (a) Dalton
Q.18:- During electrolysis the reaction at anode is ?
- Oxidation
- Reduction
- Decomposition
- None of these
Ans:- (a) Oxidation
Q.19:- When Iron is rusted, it is ?
- Oxidised
- Reduced
- Evaporated
- Decomposed
Ans:- (a) Oxidised
Q.20:- Rate of diffusion of a gas is ?
- Directly proportional to its density
- Directly proportional to its molecular mass
- Directly proportional to the square of its molecular mass
- Inversely proportional to the square root of its molecular mass
Ans:- (d) Inversely proportional to the square root of its molecular mass
Q.21:- The pH of lemon juice is expected to be ?
- Less than 7
- More than 7
- Equal to 7
- Nothing can be predicted
Ans:- (a) Less than 7
Q.22:- Which of the following is an extensive property of the system ? (Thermodynamics and Energetics)
- Temperature
- Volume
- Refractive Index
- Viscosity
Ans:- (b) Volume
Q.23:- Which of the following has zero electron affinity ?
- Nitrogen
- Oxygen
- Fluorine
- Neon
Ans:- (d) Neon
Q.24:- The most common lanthanide is ?
- Lanthanum
- Cerium
- Plutonium
- Samarium
Ans:- (b) Cerium
Q.25:- Electron affinity of noble gases is ?
- Almost Zero
- Low
- High
- Very High
Ans:- (a) Almost Zero