Q1:
With reference to the Desalination process, consider the following statements and choose the correct option:
- The salt removed from the water can change the salinity and lower the amount of
oxygen in the water.
- The discharge from the desalination process can be used for aquaculture to increase fish biomass.
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
Answer : c
Explanation
The salt removed from the water is known as brine, can change the salinity and lower the amount of oxygen (Hypoxia) in the water at the disposal site, stressing or killing animals not used to the higher levels of salt.
In addition, the desalination process uses or produces numerous chemicals including chlorine, carbon dioxide, hydrochloric acid and anti-scalents that can be harmful in high concentrations.
The discharge can also contain precious elements like uranium, strontium as well as sodium and magnesium which have the potential to be mined.
Brine has been used for aquaculture, with increases in fish biomass of 300%. It has also been successfully used to cultivate the dietary supplement Spirulina, and to irrigate forage shrubs and crops.
Q 2:
With reference to BrahMos Missile, consider the following statements and choose the correct options:
- The name of the missile is based on the amalgamation of the Brahma and Moskva names of Gods revered in two countries.
- It is a long-range supersonic cruise missile which can be launched from submarines, ships, aircraft or land.
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
Answer : d
Explanation
BrahMos Missile is an amalgamation of the names of Brahmaputra river and Moskva river (rivers not Gods), BrahMos missiles are designed, developed and produced by BrahMos Aerospace.
BrahMos Aerospace is a joint venture company set up by the Defence Research and Development Organisation (DRDO) and Mashinostroyenia of Russia.
It is a medium-range supersonic cruise missile which can be launched from submarines, ships, aircraft or land.
Q3: Consider the following statements and choose the correct options:
- National Nutrition Mission envisages to improve nutritional outcomes for children, pregnant women and lactating mothers.
- National Nutrition Strategy aims to attain malnutrition-free India by 2022.
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 and 2
Answer : c
Explanation
National Nutrition Mission launched in 2018, it is the Government of India’s flagship programme to improve nutritional outcomes for children, pregnant women and lactating mothers.
It aims to reduce stunting, undernutrition, anemia (among young children, women and adolescent girls) and low birth weight by 2%, 2%, 3% and 2% per annum respectively.
National Nutrition Mission is backed by a National Nutrition Strategy prepared by the NITI Aayog with the goal of attaining “Kuposhan Mukt Bharat” or malnutrition-free India, by 2022.
Q4: Consider the following statements with respect to tropical cyclones and choose the correct option:
- More cyclones are formed in the Bay of Bengal than the Arabian Sea.
- Cyclones gain their energy from the heat and moisture generated from warm ocean surfaces.
- From the centre of a cyclonic storm, pressure increases outwards.
- 1 only
- 2 and 3 only
- 1, 2 and 3
- 1 and 2 only
Answer: c
Explanation:
More cyclones are formed in the Bay of Bengal than the Arabian Sea due to wind patterns (that keep oceans cooler on the western side).
Cyclones gain their energy from the heat and moisture generated from warm ocean surfaces.
From the centre of a cyclonic storm, pressure increases outwards.
The amount of the pressure drop in the centre and the rate at which it increases outwards give the intensity of the cyclones and the strength of winds.
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