Questions

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

The following pie-­chart shows the study­ time of different subjects of a student in a day . Study the pie chart and answer the following questions.

Instead of 10% , if the student spends 15% to study other subjects and the time is taken from the time scheduled to study mathematics and if he/ she used to study 20 hours per day , then the difference of time for studying mathematics per day is

The author of the book "The People's President: Dr. A P J Abdul Kalam" is:

Who is the author of the autobiographical work 'On My Terms : From the Grassroots to the Corridors of Power'?

In the following question, select the missing number from the given series.

2, 5, 12, 27, ?

If a chord of a circle subtends an angle of 30° at the circumference of the circle, then what is the ratio of the radius of the circle and the length of the chord respectively?

In the following question, a passage is given which describes a situation. From the given options, mark the correct inference that can be drawn from the passage. If none of the inferences follow, mark option 5, “None of these” as the answer.
In nearly all human populations a majority of individuals can taste the artificially synthesized chemical phenylthiocarbonide (PTC). However, the percentage varies dramatically-- from as low as 60% in India to as high as 95% in Africa. That this polymorphism is observed in non- human primates as well indicates a long evolutionary history which, although obviously not acting on PTC, might reflect evolutionary selection for taste discrimination of other, more significant bitter substances, such as certain toxic plants.

Organisms that use light to prepare food are known as _____.