National News-Scientific and Technological Developments [Current Affairs]: Questions 33 - 34 of 36

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Question 33

Question MCQ▾

Which of the following statement (s) is/are correct?

1. AgniKul Cosmos՚ Agnibaan SubOrbital Technological Demonstrator (SOrTeD) is a remarkable achievement in the field of space technology, particularly in rocket propulsion.

2. It is powered by Agnilet, a 3D-printed semi-cryogenic engine developed by AgniKul. The engine has a thrust of 6 kilonewtons (kN) and uses a combination of liquid oxygen and kerosene as propellants.

3. Unlike traditional sounding rockets that use guide rails for launch, Agnibaan SOrTeD takes off vertically. It follows a predetermined trajectory and executes precise maneuvers during its flight, enhancing its control and flexibility.

Choices

Choice (4)Response

a.

1 and 2

b.

2 and 3

c.

1 and 3

d.

All a., b. and c. are correct

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Question 34

Question MCQ▾

With reference to Radiative Cooling Paint, consider the following statements:

(i) Electricity consumption can be diminished by a new affordable, eco-friendly radiative cooling paint that has been specifically engineered to effectively cool structures like buildings, pavers, and tiles in hot weather conditions.

(ii) Due to the increased global warming and urban heat island effects, cooling technologies have become an integral part of human life.

(iii) The active cooling devices along with the vast energy demand also emit a large proportion of greenhouse gases resulting in an increase in the earth՚s surface temperature.

(iv) With a dielectric nanoparticle, the optimized MgO-PVDF resulted in large scale solar reflectance of 96.3% along with a record high thermal emission of 98.5% due to MgO bond vibrations.

Which of the statement/statements given above is/are correct? (November)

Choices

Choice (4)Response

a.

(iii) & (ii) only

b.

(i) only

c.

(iv) only

d.

Both a. and b. are correct

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