Choose the correct word from the brackets to complete the sentence . Sodium nitrate reacts with ______ (consentraed /dilute)sulphuric acid to produce nitrc acid . Write equation for the same.

Choose the correct word from the brackets to complete the sentences. Hydrogen gas is adsorbed by metal _______ (Copper, Aluminium, Palladium)

Choose the correct word from the brackets to complete the sentences. Sulphur dioxide turns _______ (acidic/alkaline) potassium dichromate paper green.

Choose the correct word from the brackets to complete the sentences. The element which shows variable valency is ________ (Iron, Sodium, Aluminium)

Choose the correct word from the brackets to complete the sentences. Pressure-volume relationship is given by _________ (Boyle's, Charles's) law.

Choose the correct word or letter from the brackets to complete the sentences. The solubility of a gas in a liquid _________ (decreases, increases) with rise in temperature.

Choose the correct word or letter from the brackets to complete the sentences. Atomic number is equal to the number of _______ (protons, electrons, neutrons) in an atom.

Choose the correct word or letter from the brackets to complete the sentences. Potassium is placed in _______ group and _____ period of periodic table (first, second, third, fourth).

Choose the correct word or letter from the brackets to complete the sentences. Copper oxide reacts with hydrogen to produce copper and water. Copper oxide is ________ (reduced/oxidised) in this reaction.

Ethanol can be converted to ethene which can then be changed to ethane. Choose the correct word or phrase from the brackets to complete the following sentences: Converting ethanol to ethene requires the use of _______(concentrated hydrochloric acid / concentrated nitric acid/concentrated sulphuric acid)

Choose the correct word from the brackets to complete the sentences. Acid reacts with base to give salt and water. The reaction is known as __________ (Decomposition, Neutralisation, Displacement.)