Part – B General knowledge (English) (NDA/NA SOLVED PAPER 2019 (I) (51 to 100)

Total Questions: 50

11. Which one of the following is not a synthetic detergent?

Correct Answer: (d)
Solution:

12. Which one of the following is an example of a clean fuel?

Correct Answer: (b) Propane
Solution:

Clean fuels are fuels that have a lower carbon intensity than the standard for the fuel it replaces. Examples of clean fuels include ethanol, biodiesel, natural gas, biogas, propane and hydrogen.

13. Which one of the following metals does not react with cold water?

Correct Answer: (c) Magnesium (Mg)
Solution:

14. In which of the following pairs are the isoelectronic ions?

Correct Answer: (b) Na⁺ , O²⁻
Solution:

15. Which one of the following is used as a binder in paints?

Correct Answer: (d) Silicones
Solution:

Binder refers to the substances that hold the particles of pigment together in paints. Silicones are used as a binder in paints.
They are synthetic organo-silicon polymers containing repeated R₂SiO units.

16. Which one of the following is NOT true in reference to Air mass?

Correct Answer: (c) Air mass develops in a cyclonic condition
Solution:

“Air mass develops in a cyclonic condition” this option are not true in reference of air mass. Air mass is a volume of air defined by its temperature and water vapour content. Air masses cover many hundreds or thousands of miles, and adapt to the characteristic of the surface below them.
They are classified according to latitude and their continental or maritime source regions. When air masses reaches a new region, it might clash with another air mass that has a different temperature and humidty. There are four type of air masses-Polar, tropical, continental and maritime.

17. National Water Academy, a centre of excellence in training and capacity building in water resource, is located at:

Correct Answer: (c) Pune
Solution:

National Water Academy (NWA), a centre of excellence in training and capacity building in water resource, is located in Pune (Maharashtra). It was set-up under Central Water Commission by the Ministry of Water Resources in 1988.
The NWA is invisaged to function as ‘Centre of Excellence’ for in-service training of water resources engineering personnel.
It is addressing the wider training needs of water resources engineers of State and Central Agencies in the field of planning, design, evaluation, construction, operation and monitoring of water resources projects

18. ‘Campos’ and ‘Llanos’, Tropical Savanna grasslands are generally found in:

Correct Answer: (c) South America
Solution:

‘Campos’ and ‘Llanos’ are the tropical savanna grasslands found in South America. Campos is located in Brazilian Highlands and Llanos in Orinoco basin. Tropical Grasslands are located near the Equator, between the tropic of Cancer and the tropic of Capricorn.
They are also known as ‘Savannas’. It is a transitional zone found between the equatorial rainforests and the hot deserts. They includes savannas of Africa and Campos and Llanos of South America.

19. 'Viticulture’ is a common feature of which one of the following Australian cities?

Correct Answer: (a) Adelaide
Solution:

Viticulture is a common feature of Adelaide, which is the capital of South Australia. Viticulture is the cultivation and harvesting of grapes. The Adelaide Hills wine region is a famous economic region of country for production of wine from grapes.

20. ‘Shamal’ warm and dry wind is a Local wind found in:

Correct Answer: (d) Mesopotamia
Solution:

'Shamal local’ winds are found in Mesopotamia. Mesopotamia is a region covering Iraq, Iran and the Arabian Peninsula. Shamal is a hot, dusty and dry wind which blows from the North or North-West in Mesopotamia. Other important warm local winds are Chinook in North America, Foehn in the Alps, Khamsin in Egypt, Sirocco in North Africa and Harmattan in West Africa.