(a) Methanol
(b) Ethhylene glycol
(c) Propyl alcohol
(d) Ethanol
Answer:
Which one of the following was used as a chemical weapon in the first world war?
(a) Water gas
(b) Hydrogen cyanide
(c) Carbon monoxide
(d) Mustard gas
Answer:
Which one of the following elements is essential for the construction of nuclear reactors?
(a) Tungsten
(b) Zirconium
(c) Nickel
(d) Cobalt
Answer:
Aluminium surface are often 'anodized'. This means the deposition of a layer of
(a) Nickel oxide
(b) Zinc oxide
(c) Chromium oxide
(d) Aluminium oxide
Answer:
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
(a) Photolysis
(b) Hydrolysis
(c) Dialysis
(d) Electrolysis
Answer:
Salts of which of the following elements provide colours to fireworks?
(a) Chromium and nickel
(b) Strontium and barium
(c) Potassium and mercury
(d) Zinc and sulphur
Answer:
Which one of the following is produced during the formation of photochemical smog?
(a) Methane
(b) Ozone
(c) Hydrocarbons
(d) Nitrogen Oxide
Answer:
Which one of the following hormones contains iodine?
(a) Insulin
(b) Adrenaline
(c) Thyroxine
(d) Testosterone
Answer:
Which one of the following is a modified stem?
(a) Coconut
(b) Potato
(c) Carrot
(d) Sweet potato
Answer:
Corpus luteum is a mass of cell found in
(a) Pancreas
(b) Spleen
(c) Brain
(d) Ovary
Answer: