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

Two tungsten bulbs of power 50 W and 60 W work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?

Give scientific reason :
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster, etc., an alloy such as Nichrome is used, not pure metals.

Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.

Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition) 

The conversion of ferrous sulphate to ferric sulphate is ______ reaction. 

When electric current is passed through acidulated water ______ of water takes place. 

Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition) 

Addition of an aqueous solution of ZnSO₄ to an aqueous solution of BaCl₂ is an example of ______ reaction.

Explain the term reactant and product giving examples. 

State the modern periodic law.

Match the column ‘A’ with column ‘B’.

Choose the correct alternative and rewrite the following:

A glass slab is placed in the path of convergent light. The point of convergence of light

Name any six domestic appliances based on the heating effect of electric current.

Rewrite the following statement by selecting the correct option:

If a ray of light strikes a glass slab at an angle of 600 with the surface of the slab, the angle of incidence must be __________________.

Rewrite the following statement by selecting the correct option:

1 A = ____________ mA.

Answer the following question:
what is the heating effect of the electric current? state any four applications of it?

The groups 1 and 2 constitute the _______ block.

Which of the following statements about the Modern periodic table is correct?

The d-block elements are called as _______ elements.

The unit of electrical power is _______.

The ‘live’ and the ‘neutral’ wires have potential difference of _______.

In an electric bulb, coil of _______ metal is used.