Deficiency of which vitamin causes the cracking of lips at the corner?

Which of the following does not conduct electricity?

Which of the following metals is a liquid?

Sodium hydroxide is used in the manufacturing of

Which of the following is the most ductile metal?

Which of the following is a metal?

Which of the following non-metals exists in liquid state at room temperature?

Which of the following metals can be cut with knife?

Malaria is transmitted by

Which of the following signs is usually printed on containers of acids or bases to warn people about the dangerous corrosive nature of acid or base?

Which of the following non-metals is very hard?

Where does the urea produced in the body of man?

Which of the following non-metals is lustrous, i.e. having a shining surface?

Quinine is obtained from

Which of the following metals has/have the lowest melting point?

Which of the following acids is/are not stored in metal containers?

What is the taste of a base?

Which form of iron burns easily in air?

Which of the following aqueous solution conducts electricity?

Which of the following is the exact pH value of neutral substance?

To prepare aqua - regia, concentrated nitric acid and conc. hydrochloric acid are used in the ratio

Rusting of iron is an example of

What is the pH value of acidic solution?

The strength of an acid or base is measured on a

Which of the following is an inert gaseous non-metal whose presence in air reduces the rate of combustion?