SSC (English Medium) इयत्ता १० वी - Maharashtra State Board Important Questions for Science and Technology 1

Write the chemical name of bleaching powder and write its properties.

Lime water turns milky when ______ gas is passed through it.

Phenolphthalein is a synthetic type of indicator.

Choose the correct alternative and rewrite the following sentence.

Phenolphthalein is ___________ type of indicator. 

When _______________ is passed through fresh lime water, it turns milky.

Answer the following question:
What is the universal indicator? Does Mg (OH)₂ react with sodium hydroxide? If not, why?

In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables

Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).

Differentiate between resistances in series and parallel.

State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?

Complete the following :-

(a)

Complete the following :-

(b)

Complete the following :-

(c)

If the equivalent resistance is to be increased, then the number of resistances should be connected in

1. Series
2. Parallel
3. Mixed arrangement
4. None of the above

With a neat labelled diagram and derive the equation for three resistances connected in parallel.

Find the expression for resistors connected in series.

Write any two characteristics of a series combination of resistors.

1 calorie =  _________ joule.

The equivalent resistance of the parallel combination of two resistors of 60Ω and 40Ω is _______.

A) 24Ω

(B) 100Ω

(C) 50 Ω

(D) 240Ω

If a bulb of 60W is connected across a source of 220V, find the current drawn by it.