Which term in psychology is generally used to refer to emotional disorders such as, anxiety, depression and phobia:
- (A) Psyches
- (B) Hypnosis
- (C) Neurosis
- (D) Mental illness
- (C) Neurosis
All alkali metals react with water to form:
- (A) Oxides
- (B) Peroxides
- (C) Hydroxides
- (D) Hyper oxides
- (C) Hydroxides
Permanent hardness of water is due to the presence of:
- (A) Calcium bicarbonate
- (B) Magnesium bicarbonate
- (C) Calcium sulphate
- (D) Sodium bicarbonate
- (C) Calcium sulphate
LASER is an acronym for:
- (A) Light Amplification by Standard Emission of Light
- (B) Light Absorption Stimulated Entrance of Radiation
- (C) Light Amplification by Stimulated Emission of Radiation
- (D) Light Absorption by Standard Emission of Radiation
- (C) Light Amplification by Stimulated Emission of Radiation
If carbon dioxide is passed through lime water for a long time, the cloudy white colour (initially formed) disappears because of the formation of:
- (A) Calcium bicarbonate
- (B) Calcium hydroxide
- (C) Calcium carbonate
- (D) Calcium sulphate
- (A) Calcium bicarbonate
Articles made of copper and bronze slowly tarnish in air and turn green, the green colour is due to the formation of:
- (A) Copper oxide
- (B) Copper sulphate
- (C) Copper oxalate
- (D) All of these
- (B) Copper sulphate
Bleaching powder losses its power on keeping for a long time because:
- (A) It changes into calcium hypochlorite
- (B) It changes into calcium chloride and calcium hydroxide
- (C) It absorbs moisture
- (D) It changes into calcium chloride and calcium chlorate
- (B) It changes into calcium chloride and calcium hydroxide
When the quantity of charge on each of the two bodies is doubled, the force between them becomes:
- (A) One fourth
- (B) One half
- (C) Twice
- (D) Four times
- (D) Four times
Light year is related to:
- (A) Time
- (B) Distance
- (C) Energy
- (D) Speed
- (B) Distance
The word ceramic means:
- (A) Hard material
- (B) Soft material
- (C) Dry material
- (D) Burnt material
- (D) Burnt material