SSC (Marathi Semi-English) इयत्ता १० वी - Maharashtra State Board Question Bank Solutions for Science and Technology 1

In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining

Sulphide ores : Roasting : : Carbonate ores : _______

Zinc sulphide : Roasting : : zinc carbonate : _______

Find the odd one out and give its explanation.

Find the odd one out and give its explanation.

Find the odd one out and give its explanation.

Write Fleming’s right hand thumb rule with the help of diagram.

Write the two names in the following diagram.

Right hand thumb rule.

Write the two names in the following diagram.

Fleming’s right hand rule.

Write the name.

The molecular formula of main ore of aluminium –

Write the name.

Metals which are amphoteric in nature.

Write the name.

The process of strong heating of carbonate ores in insufficient air–

Write the name.

The process of extraction of aluminium from alumina-

The lens of the eye is flattened when looking at nearby objects.

Mercury, silver, gold are highly reactive metals.

In the electrolytic method, a layer of highly active metal is applied to a less active metal.

In the electrolytic reduction of alumina, the lining of graphite acts as an anode.

The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.

Gold and silver are active metals.

Bauxite reacts with sodium hydroxide in the Bayer’s process.