Questions

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Passive/Active voice.
I have kept all your old letters.

Which feature of the cell allows or permits the entry and exit of some materials in and out of the cell?

Which acid is secreted by certain glandular cells in the stomach lining?

15% of an alloy was silver. If in a quantity of alloy there was 51 g of silver, what was the quantity of the other elements in the alloy?

Goods for which demand move in the opposite direction of the income of the consumer are called?

The number of days' sales uncollected is calculated by

The area of a circle is 38.5 cm2. Find its circumference (in cm).

Which of the following was a leader of the Hindustan Socialist Republican Army founded in 1928?