Following are the set of 25 multiple choice questions from the subject Chemistry. The purpose of this section is just to support the candidates who prepare for Kerala PSC and other competitive exams. You can always refer this website from your mobile phone on the go or from your home PC.
Chemistry Related Questions | Set-1
(A multiple choice questions and answer for Kerala PSC, UPSC, SSC, Banking, IBPS, Railway and other competitive exams)
1. Water has maximum density at .... degree celcius:
(a) 0
(b) 4
(c) 25
(d) 100

2. The gas using for filling balloons:
(a) Nitrogen
(b) Oxygen
(c) Helium
(d) Argon

3. Beryllium aluminium silicate is known as:
(a) Alum
(b) Topaz
(c) Ruby
(d) Emerald

4. The isotope using for radio carbon dating:
(a) Carbon-14
(b) Cobalt-60
(c) Uranium-238
(d) None of these

5. Which is not correctly matched?
(a) Black lead-Graphite
(b) Solid CO2-Dry ice
(c) Nitrous oxide- laughing gas
(d) Helium-Chemical sun

6. The best non-metallic conductor of electricity:
(a) Silicon
(b) Germanium
(c) Graphite
(d) Boron

7. The first Trans Uranic element:
(a) Plutonium
(b) Neptunium
(c) Einsteinium
(d) Fermium

8. Most chemically reactive element?
(a) Hydrogen
(b) Oxygen
(c) Carbon
(d) Flourine

9. The colour of sodium vapour lamp:
(a) Yellow
(b) Blue
(c) Violet
(d) Red

10. The essential constituent of chlorophyll:
(a) Manganese
(b) Sodium
(c) Potassium
(d) Magnisium

11. The first to isolate aluminium from bauxite:
(a) Oesterd
(b) Wohler
(c) Charles Martin Hall
(d) Henry Bessemer

12. The main constituent of bone:
(a) Calcium carbonate
(b) Calcium silicate
(c) Calcium phosphate
(d) None of these

13. Which is used for the vulcanisation of rubber:
(a) Sulpher
(b) Sodium
(c) Phospherus
(d) Iron

14. The most abundant inert gas:
(a) Radon
(b) Xenon
(c) Krypton
(d) Argon

15. Which is known as the ‘metal of future’?
(a) Uranium
(b) Platinum
(c) Tantallum
(d) Titanium

16. Pyrolusite is the ore of:
(a) Magnisium
(b) Iron
(c) Copper
(d) Manganese

17. Second most abundant metal in the earth’s crust:
(a) Silicon
(b) Iron
(c) Aluminium
(d) Gold

18. The purest form of Iron:
(a) Rust
(b) Pig iron
(c) Wrought iron
(d) Haematite

19. Which is not a constituent of Alnico?
(a) Nickel
(b) Cobalt
(c) Copper
(d) Aluminium

20. Malachite is the ore of:
(a) Copper
(b) Iron
(c) Manganese
(d) Aluminium

21. Which is used as a catalyst in hydrogenation?
(a) Cobalt
(b) Nickel
(c) Silver
(d) Zinc

22. Basic copper carbonate is the chemical name of:
(a) Rust
(b) Corrundum
(c) Carborandum
(d) Verdigris

23. The first metal used used systematically for making tools:
(a) Iron
(b) Aluminium
(c) Copper
(d) Gold

24. Select the correctly matched?
1. Ferrum 2. Cuprum 3. Kalium 4. Natrium
A.Potassium B. Iron C.Copper D. Sodium
(a) 1D 2C 3A 4 B
(b) 1B 2A 3C 4 D
(c) 1B 2C 3D 4 A
(d) 1B 2C 3A 4 D

25. Pentlandite is the ore of:
(a) Iron
(b) Cobalt
(c) Nickel
(d) Copper