Which country was India’s biggest trading partner

Which of the following two chemical reactions are involved in the corrosion of the iron metal?

Which of the following types of coal is called a brown coal among the following?

Which one of the following crops enriches nitrogen content in the soil?

A particle enters a uniform magnetic field at some angle other than 90° or 0° to the field. The path followed by the particle is:

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -

What is the common name of calcium hydroxide?

Which of the following is a conductor of electricity?

Up to what temperature can a mercury thermometer measure?

Which of the following statements about permanent tissues is correct ?

What is the metric unit of pressure that is equal to 0.986923 atm?