Questions

C.P. of 10 note books ⇒ 140 × 10 = 1400 Rs.
Profit on selling one pen ⇒ 50×200/100 = Rs 100
Number of pen required ⇒ 1400/100 = 14

Photosynthesis process removes carbon dioxide from the atmosphere. Green plants remove carbon dioxide from the atmosphere by photosynthesis. 

The level of carbon dioxide in the atmosphere is maintained by several processes, including photosynthesis, respiration and combustion. 

Polypeptides are assembled from Aminoacids.

Describe your ideal job?

You should use this question to relate to the post you applied and give them the feel that this is close to your ideal job. So align your wonderful ideal job reasons to the responsibilities of the job posting. 

This is a question that you can use to add some humor or do a icebreaker like just joking that your ideal job is to work in a space station or would like to work in Hollywood but after a quick laugh give a realistic answer like my ideal job is where i get more responsibilities, enhance my skills and grow, and of-course you can add saying you would like to be part of a team where work is fun. If you want to go further, You might add at the end you heard good things about the work environment in the interviewing company.

Sparse matrix,

Index generation