Questions

Photosynthesis is the process that converts solar energy into chemical energy. During the stage of light-dependent reactions involving photosystems I and II in photosynthesis, O2 produced.

The "Pradhan Mantri Shram-Yogi Maandhan" scheme was launched on 15-02-2019. Under the PM-SYM scheme, the workers will get amount of Rs. 3,000 pension after attaining the age of 60 years. 

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.

Variable costs are expenses that vary in proportion to the amount of goods or services that a business produces. 

Examples of variable cost include labor, packaging and raw materials.