Questions

___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.

Kyoto Protocol is associated with

Who Invented Universal Standard Time?

Living things constitute the biotic component of the ___________________.

Sex­ratio in India is measured as

Which company developed 'Swift' Programming Language?

What is the heat generated (in J) in a heating element of resistance 1000 Ω when a current of 0.1 A passes through it for 25 seconds?

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives.

When the kerosene burned, the fuel in the tank below would be __________ pressure, and __________ a small circular flame would appear in the burner. The valve had tobe opened to let more kerosene vapour to the burner and pumping resumed. With the increase in pressure, the burner flame would spread _________ a loud noise. Tolower the flame, the valve had to be _________ opened to reduce the pressure and then tightened until the desired flame size was achieved. _________ you wanted theflame to be bigger, you had to hit the piston again. Pump stoves are still in vogue.

would spread _________ a loud noise.