Engnish General Science Questions And Answers
1. Which of the following is the lightest metal ?
(A) Mercury (B) Silver
(C) Lithium (D) Lead (Ans : C)
2. The most important ore of Aluminium is–
(A) Bauxite (B) Calamine
(C) Calcite (D) Galena (Ans : A)
3. The element present in the largest amount in rocks and minerals is–
(A) Carbon (B) Silicon
(C) Hydrogen (D) Aluminium (Ans : B)
4. The chemial name of Uria is–
(A) Aneurin (B) Chloroetane
(C) Carbamide (D) None of these (Ans : C)
5. Permanent hardness of water can be removed by adding–
(A) Potassium Permanganate (B) Chlorine
(C) Bleaching Powder (D) Washing Soda (Ans : D)
6. The formula of Plaster of Paris is–
(A) CaSO4 (B) CaSO4, 2H2O
(C) 2CaSO4, 4H2O (D) 2CaSO4, H2O (Ans : D)
7. Liquefied Petroleum gas (LPG) consists of mainly–
(A) Methane, Ethane and Hexane (B) Ethane, Hexane and Nonane
(C) Methane, Butane and Propane (D) Methane, Hexane and Nonane (Ans : C)
8. The metal that is present in Photo Films is–
(A) Mercury (B) Platinium
(C) Magnesium (D) Silver (Ans : D)
9. Which of the following is in liquid form at room temperature ?
(A) Cerium (B) Sodium
(C) Francium (D) Lithium (Ans : C)
10. The property of a substance to absorb moisture from the air on exposure is called–
(A) Osmosis (B) Desiccation
(C) Efflorescence (D) Deliquescene (Ans : D)
11. Brass gets discoloured in air due to the presence of which gas in air–
(A) Carbon dioxide (B) Oxygen
(C) Hydrogen Sulphide (D) Nitrogen (Ans : C)
12. Quartz crystals normally used in quartz clocks etc. is chemically–
(A) Sodium Silicate (B) Silicon dioxide
(C) Germenium dioxide (D) A mixture of (B) and (C) (Ans : B)
13. Which of the following elements is non-radioactive?
(A) Uranium (B) Thorium
(C) Plutonium (D) Zirconium (Ans : D)
14. According to Dalton’s atomic theory the smallest particle which can exist independently is–
(A) An atom (B) A molecule
(C) A cation (D) An anion (Ans : A)
15. The recent atomic weight scale is based on–
(A) 1H1 (B) 1H2
(C) 6C12 (D) 8O16 (Ans : C)
16. The major ingredient of leather is–
(A) Carbohydrate (B) Collagen
(C) Polymer (D) Nucleic acid (Ans : B)
17. Glass is made from the mixture of–
(A) Quartz and mica (B) Sand and salt
(C) Sand and silicates (D) None of these (Ans : C)
18. Epoxy resins is used as–
(A) Moth repellants (B) Insecticides
(C) Detergents (D) Adhesives (Ans : D)
19. One fathom is equal to–
(A) 6 metres (B) 6 feet
(C) 60 feet (D) 60 cms (Ans : B)
20. What is the unit for measuring the pitch or frequency of sound ?
(A) Coulomb (B) Hum
(C) Cycles (D) Decible (Ans : D)
21. The fastest acting enzyme in the biological kingdom is–
(A) lipase (B) amylase
(C) carboxypeptidase (D) carbonic anhydrase (Ans : D)
22. Lightening cause rainfall because–
(A) It cause combination of oxygen and nitrogen (B) Some of the gas molecules become bigger
(C) It activate H2O molecule (D) Photo-electricity reaction starts (Ans : C)
23. Nitrification means–
(A) Liquifaction of nitrogen (B) Convert the atmospheric nitrogen to effective nitrogen compound.
(C) Production of nitrogen from air (D) Conversion of nitrogen to nitric acid. (Ans : B)
24. Cell membrane is–
(A) permeable (B) selectively permeable
(C) semipermeable (D) impermeable (Ans : C)
25. Polythene is industrially prepared by the polymerisation of–
(A) methane (B) styrene
(C) acetylene (D) ethylene (Ans : D)