Can you answer these 3 difficult questions asked by ISRO in scientist exams?

Question 1

Question 2

Question 3

[{"selector":"#anim-ff1f7134-f565-4ac5-8656-f2aaca8496dc","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}]