SSC (Marathi Semi-English) १० वीं कक्षा - Maharashtra State Board Important Questions

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.

Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.

Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator