Q:

Isotopes have ______.

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: C) Only II and III

Explanation:

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Filed Under: Chemistry
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2 7356

Q:

How many balls?

Number of balls in the figure...

balls1523099634.jpg image

Answer

You have to actually count all the balls in the pyramid.
Simple way is to count the balls in each level.

So lower most level lets say 1st level has 4 x 4 balls; i.e. 16 balls
Similarly 2nd level has 3 x 3 balls; i.e. 9 balls.
3rd level has 2 x 2 balls; i.e. 4 balls.
The top most level has just 1 ball.

So the total number of balls is 16+9+4+1 = 30.

So the image has 30 Balls in all.

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11 7353

Q:

In the given figure, how many pens are blue?

A) 23	B) 19
C) 12	D) 15

Answer & Explanation Answer: A) 23

Explanation:

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Q:

Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of ________

A) Moseley's work on X-ray spectra	B) Bragg's work on X-ray diffraction
C) Mulliken's oil drop experiment	D) Discovery of X-ray by Roentgen

Answer & Explanation Answer: A) Moseley's work on X-ray spectra

Explanation:

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Q:

Find the similarity in the following :

Carbon, Silicon, Boron, Arsenic

A) All of them are gases	B) All of them are non-metals
C) All of them are metals	D) No similarity

Answer & Explanation Answer: B) All of them are non-metals

Explanation:

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Q:

Which Indian Community celebrates the Khordad sal

A) Sikh	B) Jain
C) Hindu	D) Parsi

Answer & Explanation Answer: D) Parsi

Explanation:

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Filed Under: Indian Culture

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Q:

The rank of the different Ministers in the Union Council of Ministers is determined by the

A) President	B) Prime Minister
C) Cabinet Secretary	D) Speaker of the Lok Sabha

Answer & Explanation Answer: B) Prime Minister

Explanation:

The rank of the different ministers is determined by the Prime Minister, according to whose advice the President appoints the Ministers [ Art 75(1) ] and also allocates business among them [ Art 77 ].

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Filed Under: Indian Politics

18 7336

Q:

Which of the following States is a member of the ' Seven Sisters '

A) West Bengal	B) Orissa
C) Tripura	D) Bihar

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