GENERAL KNOWLEDGE - USEFUL for ALL COMPETITIVE EXAMS...........
PHYSICS
1. From the daily life situation, What is more convenient rolling of stone on a sloping road than to lift it vertical upwards ?
Ans: the work done in rolling a stone is less than in lifting it.
2. Which is the phenomenon observed in absorption of ink by blotting paper?
Ans: Capillary action
3. Give the unit of Nuclear size and it is the name of a scientist.
Ans: Fermi
4. Why the star appears to move from east to west?
Ans: The Earth rotates from West to East.
5. What is the value of ' one KNOT' ?
Ans: 1.852 Km/hr and 'knot' is the unit of speed
CHEMISTRY:
1. What is the composition of a soap?
Ans: Potassium and Sodium salts with fatty acids.
2. Say something about 'Selenium'?
Ans: non metal, conductor
3. Which metal remains in liquid form under normal conditions?
Ans: Mercury
4. What is the mass of electron?
Ans: 9.1 X 10 ^ -31 Kg.
5. Which fuel is used in rockets?
Ans: liquid oxygen
