Which of the following are conductors and which are insulators?
Sulphur, Silver, Copper, Cotton, Aluminium, Air,Nichrome, Graphite, Paper, Porcelain, Mercury, Mica, Bakelite, Polythene, Manganin.

Which of the following metals is not included in 'seven metals of antiquity? Copper Silver Mercury Calcium

which of the following substance are elements ? water , salt , Mercury ,iron ,Marble ,diamond ,Wood ,Nitrogen Air ,Graphite ,Hydrogen ,Sugar , chloride

Which of the following elements would form oxides which would indicate pH values less than seven, using moist pH paper ? Magnesium, carbon, sulphur, Hydrogen, copper.

Consider the following materials : Copper, Tungsten, Chromium, Aluminium, Nichrome, Iron Which of these is used to make : filament of an electric bulb ?

Which of the following are biodegradable and which non-biodegradable ? Glass bottle, Paper, Ball point pen refill, Hay, DDT, Wheat, Cake, Wood, Polythene bag, Jute bag, Cotton cloth, Grass, Vegetable peels

Classify the following materials into good conductors of heat and poor conductors of heat (or insulators) : Wood, Plastic, Copper, Air, Paper, Glass, Stainless steel, Aluminium, Thermocol, Rubber.

Consider the following materials : Copper, Tungsten, Chromium, Aluminium, Nichrome, Iron Which of these is used to make : heating element of an electric iron ?

Which of the following are not compounds ? (a) Bromine gas (b) sodium chloride (c ) Magnesium (d) Iron sulphide (e) Aluminium (f) Silver (g) Carbon (h) Carbon dioxide (i) Sulphur powder.