JKBOSE Class 10th Science Multiple Choice Questions: Check

JKBOSE Class 10th Science Multiple Choice Questions: Check Your Answers Here

Check your answers for JKBOSE Class 10th Science multiple choice questions here.

Q 1:- A ray of líght goes from water into air. Will it bend towards normal ?

Ans: No, a ray of light going from water into air will actually bend away from the normal.

Q 2:- Name the mirror which can give an errect and enlarged image of an object ?

Ans: The concave mirror can give an erect and enlarged image of an object.

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Q 3:- Which type of lens has a posítive power ?

Ans: A converging lens, also known as a convex lens, has a positive power.

Or

A diverging lens has a focal length of 0.10m. What is it’s power ?

Ans: The power of the diverging lens is -10 diopters.

The power (P) of a lens is given by the formula P = 1/f, where f is the focal length of the lens.

Given that the focal length of the diverging lens is 0.10m, we can calculate its power as:

P = 1/f = 1/0.10m = 10 diopters (D)

Therefore, the power of the diverging lens is 10 diopters (D).

Q 4:- The coloured light having the maximum speed in glass prism is :

Ans: Violet light has the maximum speed in a glass prism.

Q 5:- Out of an A.C. generator and a D.C. generator, which one uses a commutator ?

Ans: A DC generator uses a commutator.

Q 6:- At the time of short circuit, what happens to the current ?

Ans: In a short circuit, the current in the circuit can increase dramatically.

Q 7:- The modern periodic table was prepared by ?

Ans: The modern periodic table was prepared by Russian chemist Dmitri Mendeleev.

Q 8:- Name the functional group which always occurs in the middle of carbon chain ?

Ans: The carbonyl group (C=O) always occurs in the middle of a carbon chain in ketones.

Or

Why does ethyne burn with a scooty flame ?

Ans: Ethyne burns with a sooty flame due to incomplete combustion caused by its low hydrogen-to-carbon ratio.

Q 9:- The noble gas having only two electrons in its valence shell is :

Ans: The noble gas that has only two electrons in its valence shell is helium (He).

Q 10:- The number of molecules of water of crystallisation present in washing soda crystal is :

Ans: There are 10 molecules of water of crystallisation present in each washing soda crystal.

Q 11:- Do all cells use oxygen to produce energy ?

Ans: No, not all cells use oxygen to produce energy. Some cells can produce energy without oxygen through anaerobic respiration.

Q 12:- Name the organism which has parasitic mode of nutrition ?

Ans: Parasites have a parasitic mode of nutrition.

Q 13:- What is the other name of sex cells ?

Ans: The other name for sex cells is gametes.

Please note that the information provided is for informational purposes only and may not be entirely accurate. It is recommended to verify the information before relying on it solely.