ads slot

Kerala PSC - Important and Repeated General Science Questions - 06

Kerala PSC - Important and Repeated General Science Questions - 06

1. Potassium nitrate is used in

[a] medicine
[b] fertiliser
[c] salt
[d] glass


2. Permanent hardness of water may be removed by the addition of

[a] sodium carbonate
[b] alum
[c] potassium permanganate
[d] lime


3. Soda water contains

[a] carbonic acid
[b] sulphuric acid
[c] carbon dioxide
[d] nitrous acid


4. The most important ore of aluminium is

[a] galena
[b] calamine
[c] calcite
[d] bauxite


5. Most soluble in water is

[a] camphor
[b] sulphur
[c] common salt
[d] sugar


6. Which of the following was to be discovered first in the chromospheres of the sun?

[a] Krypton
[b] Xenon
[c] Neon
[d] Helium


7. Which of the following is in liquid form at room temperature?

[a] Lithium
[b] Sodium
[c] Francium
[d] Cerium


8. Sodium metal is kept under

[a] petrol
[b] alcohol
[c] water
[d] kerosene


9. Which of the following are the ingredients of gun metal?

[a] Iron, Zinc, Titanium
[b] Iron, tin
[c] Iron, Brass, Tin
[d] Copper, Tin


10. From which mineral is radium obtained?

[a] Rutile
[b] Haematite
[c] Limestone
[d] Pitchblende


11. What is laughing gas?

[a] Nitrous Oxide
[b] Carbon monoxide
[c] Sulphur dioxide
[d] Hydrogen peroxide


12. Actinides are the elements with atomic numbers from

[a] 97 to 104
[b] 101 to 115
[c] 89 to 103
[d] 36 from 43


13. The two elements that are frequently used for making transistors are

[a] boron and aluminium
[b] silicon and germanium
[c] iridium and tungsten
[d] niobium and columbium


14. The filament of an electric bulb is made of

[a] tungsten
[b] nichrome
[c] graphite
[d] iron


15. Diamond is an allotropic form of

[a] germanium
[b] carbon
[c] silicon
[d] sulphur


Share on Google Plus

About Kerala Boys

This is Kerala Boys new KERALAPSCGK.COM which is an exam preparation platform that provides you unlimited practice options, online tests along with conceptual content, developed and designed by Santhosh Nair