The Book "Wealth of Nations" written

In the periodic table of elements, what happens to the atomic radius as you move from left to right across a period?

Haematite ores is the ore of which metal?

_____ is used for making chemical apparatus like beakers, flasks, etc.

Which of the following statement is/are true?

I. Metal oxides are acidic in nature

II. Non-metallic oxides are basic in nature

Which of the following vitamins is called a water-soluble vitamin?

Air coolers are more suitable for –

A radioactive substance emits?

Match the following columns and choose the correct option:

_____ are a group of chemicals that influence cell division and shoot formation.

Which among the following form of coal contains the highest percentage of carbon content?