Assessment Test-9 Everyday Science (MCQs)

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

All alkali metals react with water to form:

• (A) Oxides
• (B) Peroxides
• (C) Hydroxides
• (D) Hyper oxides

Permanent hardness of water is due to the presence of:

• (A) Calcium bicarbonate
• (B) Magnesium bicarbonate
• (C) Calcium sulphate
• (D) Sodium bicarbonate

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

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

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

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

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

Light year is related to:

• (A) Time
• (B) Distance
• (C) Energy
• (D) Speed

The word ceramic means:

• (A) Hard material
• (B) Soft material
• (C) Dry material
• (D) Burnt material