What is the base year of NIFTY

Study the following questions carefully and choose the right answer:

Which of the following element is used for the manufacture of the safety-matches?

_______ is a common name of ethanoic acid.

Who proposed the 'Law of Octaves' in the periodic classification of elements?

During which operating conditions of an automobile is carbon monoxide content in exhaust gas maximum?

Match the following columns and choose the correct option:

Which element causes whiptail disease in plants?

Which of the following elements is a member of the actinoid series?

Which of the following cannot be cut by a knife?

The conversion of hard water into soft water by boiling or adding calcium hydroxide is called: