Practice Chemistry gk quiz - general science mcq Online Quiz (set-2) For All Competitive Exams

Q-1)   Galvanized iron is coated with

(a)

(b)

(c)

(d)

Q-2)   Pencil lead is

(a)

(b)

(c)

(d)

Q-3)   Heavy water is a type of

(a)

(b)

(c)

(d)

Q-4)   Which one of the following catalysts is used in hydrogenation of vegetable oils?

(a)

(b)

(c)

(d)

Q-5)   The plates of galvanized iron remains protected from rust because the existence of

(a)

(b)

(c)

(d)

Q-6)   An element X has four electrons in its outermost orbit. What will be the formula of its compounds with hydrogen?

(a)

(b)

(c)

(d)

Q-7)   Consider the following statements and select the correct answer from given codes below.
  1. Water becomes harder due to the presence of Calcium Sulphate and it is not usable.
  2. Diamond is harder than copper and iron.
  3. Oxygen is the main component of air.
  4. Nitrogen is used in the manufacture of vegetable ghee.
Code

(a)

(b)

(c)

(d)

Q-8)   The halogen being used as analgesic is

(a)

(b)

(c)

(d)

Q-9)   Which of the following remains in a solid state at normal temperature?

(a)

(b)

(c)

(d)

Q-10)   Which of the following is not optically active?

(a)

(b)

(c)

(d)

Q-11)   Which of these is not an additional form of Carbon?

(a)

(b)

(c)

(d)

Q-12)   Check these statements.
  1. Brass is an alloy of Copper and Zinc.
  2. Magnetite is the main ore of Aluminium.
  3. Mercurius Solubilis are that substance which mainly involves mercury.
  4. Potassium Nitrate (KNO3 ) is a chemical used in photography.
Which of the above are true?Code

(a)

(b)

(c)

(d)

Q-13)   Aluminium surface is often ‘Anodized’. This means the deposition of a layer of

(a)

(b)

(c)

(d)

Q-14)   Combination of which substance in the alloy renders stainless steel non-magnetic?

(a)

(b)

(c)

(d)

Q-15)   Which lubricant is used for heavy machines?

(a)

(b)

(c)

(d)

Q-16)   The substance used as moderator and coolant both, in nuclear reactors is

(a)

(b)

(c)

(d)

Q-17)   Water is a good solvent of ionic salts because

(a)

(b)

(c)

(d)

Q-18)   Which is used as Laughing gas?

(a)

(b)

(c)

(d)

Q-19)   Buckminster Fullerene is

(a)

(b)

(c)

(d)

Q-20)   Which pair of following is of Copper alloys?

(a)

(b)

(c)

(d)