Questions

India has donated $ 3 lakh for a peacekeeping initiative at the United Nations pipeline for peacekeeping initiative at the UN.

When exports are greater than imports, net exports are positive and similarly, when imports are greater than exports, net exports are negative.

When a country imports goods, it buys them from foreign producers. The money spent on imports leaves the economy, and that decreases the importing nation's GDP.

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.

Hence, the given statement is true.

Sound waves cannot be transmitted through vacuum. 

Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

Bismillah Khan was associated with Shehnai. He made the Shehnai as the classical musical instrument in his concert in All India Musical Conference, Kolkata in 1937.