Daily Quiz SSC CGL & CHSL GK/GS 2017

1   Rainbow is due to

absorption of sunlight in minute water droplets

diffusion of sunlight through water droplets

ionisation of water deposits

refraction and reflection of sunlight by water droplets 2  ML2T-2 is the dimensional formula for moment of inertia pressure elasticity couple acting on a body 3 One nanometer is equal to 10-6m 10-8m 10-9m 10-5m 4 Mica is used in electrical appliances such as electric iron        because mica is a good conductor of heat but a bad conductor of electricity a bad conductor of heat but a good conductor of electricity a good conductor of heat as well as electricity a bad conductor of heat as well as electricity 5 It is easier to roll a barrel full of coal tar than to pull it              because the full weight of the barrel comes into play when it is pulled the rolling friction is much less than the sliding friction more surface area of the barrel is in contact with the road when it is pulled coal tar is a liquid and it flows in the barrel when it is rolled 6 Minimum number of unequal vectors which can give zero        resultant are two three four more than four 7  Intensity of sound has an object existence a subject existence no existence both subjective and objective existence 8 Rain is falling vertically downwards. To a man running east-    wards, the rain will appear to be coming east west northeast southeast 9 An aeroplane is flying horizontally with a velocity of 600          km/h and at a height of 1960 m. When it 1200 m 0.33 km 3.33 km 33 km 10  Radiocarbon is produced in the atmosphere as a result of collision between fast neutrons and nitrogen nuclei present in the atmosphere action of ultraviolet light from the sun on atmospheric oxygen action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere lightning discharge in atmosphere Answere:- 1-4,2-4,3-3,4-1,5-2,6-2,7-1,8-1,9-3,10-1