Which alloy is composed of aluminium, copper and magnesium?

Which one of the following is used for rating diesel oil?

The growing plants need which of the following elements in the largest quantity?

Which of the following is the gas used for refrigeration?

Name an alloy that does not contain copper?

Which acid is present in lemon?

A blue glass, when heated, will glow with

Vegetable oils are hydrogenated in the presence of finely divided

Which one of the following polymers is widely used for making bullet proof materials?

Which element is present in the earth' s crust in the highest quantity?

Which of the following elements is least present in the human body?

By the interaction of chlorine with which of the following is bleaching powder obtained?

The presence of which of the following oxides imparts deep blue colour to glass?

The compound of which of the following chemicals is added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas?

The bitter or sharp taste of unripe fruits is due to high concentration of

The atomic weight of which one of the following metals is less than that of iron?

Who among the following scientists helped to develop the Periodic law?

DDT is a/an

Which metal remains in the liquid form under normal conditions?

Which of the following fertilizers has the highest percentage of nitrogen?

Which one of the following is a balanced fertilizer for plants?

Soap is a mixture of sodium or potassium salts of

Which of the following gases is used in the artificial ripening of green fruits?

Which chemical compound becomes a powerful tool of destruction, when mixed with diesel fuel?

Chloro-fluro-carbon gases are not used in which of the following?