1. Amyl acetate has the smell of:
(a) Grapes
(b) Orange
(c) Pineapple
(d) Banana
(d) Banana
2. Which one of the following is not applicable to metals?
(a) High Melting point
(b) High Boiling point
(c) High density
(d) Low melting point
(d) Low melting point
3. Volume of liquid is measured in:
(a) Litre
(b) Gram
(c) Metre
(d) Yard
(a) Litre
4. The material used for the bomb dropped in Nagasaki:
(a) Plutonium
(b) Thorium
(c) Uranium
(d) None of these
(a) Plutonium
5. Which human organ is first affected by nuclear radiation?
(a) Brain
(b) Liver
(c) Heart
(d) Kidney
(a) Brain
6. Which metal contributes the largest portion of the mass of the earth?
(a) Aluminum
(b) Magnesium
(c) Iron
(d) Nickel
(c) Iron
7. Which element has the smallest atom?
(a) Hydrogen
(b) Helium
(c) Lithium
(d) Boron
(a) Hydrogen
8. The mineral added to cement to adjust the duration of setting:
(a) Epsom
(b) Sodium
(c) Lime
(d) Gypsum
(d) Gypsum
9. Which one of the following is not in crystalline form?
(a) Table salt
(b) Blue vitriol
(c) Rubber
(d) Sugar
(c) Rubber
10. The most abundant mineral in seawater:
(a) Sodium
(b) Magnesium
(c) Calcium
(d) Chlorine
(d) Chlorine
11. Which metal is used to make the covering of nuclear reactors?
(a) Lead
(b) Uranium
(c) Tin
(d) Copper
(a) Lead
12. Which is added to petrol to reduce knocking:
(a) Ethyl Mercaptan
(b) Tetra Ethyl Lead
(c) Gas Oil
(d) Benzene
(b) Tetra Ethyl Lead
13. The first organic compound prepared in a laboratory:
(a) Ammonia
(b) Urea
(c) Methane
(d) Benzene
(b) Urea
14. Which is known as 'Artificial Silk'?
(a) Dioxin
(b) Nylon
(c) Cellulose
(d) Rayon
(d) Rayon
15. Which one of the following is an isotope of Hydrogen?
(a) Protium
(b) Deuterium
(c) Tritium
(d) All of these
(d) All of these
16. The isotope used for the treatment of Cancer:
(a) Carbon-14
(b) Uranium-238
(c) Cobalt-60
(d) None of these
(c) Cobalt-60
17. The chemical property of a metal is determined by:
(a) Electrons
(b) Protons
(c) Neutrons
(d) All of these
(a) Electrons
18. The main constituent of Cellulose:
(a) Nitrogen
(b) Hydrogen
(c) Carbon
(d) Oxygen
(c) Carbon
19. Which gas is commercially produced through Bosch Process?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Hydrogen
(d) Hydrogen
20. Which is added to petrol in cold countries to avoid freezing?
(a) Ethylene Glycol
(b) Tetra Ethyl Lead
(c) Ethyl Mercaptan
(d) Benzene
(a) Ethylene Glycol
21. Sodium Citrate is used as a ..........:
(a) Fuel
(b) Explosive
(c) Food preservative
(d) Pigment
(c) Food preservative
22. Plant ash contains:
(a) Calcium
(b) Potassium
(c) Silver
(d) Tin
(b) Potassium
23. Atomic number of nitrogen:
(a) 7
(b) 8
(c) 9
(d) 19
(a) 7
24. The path of an electron around the nucleus:
(a) Ring
(b) Orbit
(c) Sphere
(d) None of these
(b) Orbit
25. Which element has the largest atom?
(a) Carbon
(b) Nitrogen
(c) Sodium
(d) Cesium
(d) Cesium
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