Questions

Calcium salts used as fertilizer is:

Why is argon gas used along with tungsten wire in an electric bulb?

What is the common name of Sodium Bicarborate?

Gagan Narang was associated with

Which state won the Best State Award in cadaveric organ donation for the 4th consecutive year?

Tempera paint is often used to create

Which among the following statements about the power to change the basic structure of the Constitution of India is/are correct?1. It falls outside the scope of the amending powers of the Parliament.2. It can be exercised by the people though representatives in a Constituent Assembly.3. It falls within the constituent powers of the Parliament.Select the correct answer using the code given below.

A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives.

The quest to find life outside the solar system got a big boost with the discovery of seven Earth-size extra-solar planets, or exoplanets, orbiting a dwarf star about 40 light years away. Unlike earlier discoveries of exoplanets, all seven planets could possibly have liquid water — a key to life as we know it on Earth — with three planets having the greatest chance. This is by far the largest collection of Earth-like planets in the habitable 'Goldilocks' zone of a star — neither too close nor too far from a star, which raises the possibility of liquid water being present on the surface. Only Earth has liquid water in the solar system. Since the dwarf star is much cooler than the Sun, the dimming of light each time a planet passes or transits before the star could be easily recorded from Earth unlike in cases when planets transit a Sun-like bright star. Since the initial discovery of three planets was made using the Chile-based Transiting Planets and Planetesimals Small Telescope, the exoplanet system is called TRAPPIST-1.

How many planets in our solar system have liquid water?