Exams

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?

Compute : (50 + 0.5 x 20) / 0.7

Which of the following part of plant cell, is selectively permeable?

Yerwada Jail is in

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word

Boiling point of water is ___.

The average age of a batch of 19 members is 24 years. If the age of the faculty be included, then the average increases by 4 months. What is the age of the faculty?

Which one of the following oxides of Nitrogen is also known as Laughing Gas?