Q:

Alloy of copper and zinc is called

A) Bronze	B) Gold
C) Silver	D) Brass

Answer & Explanation Answer: D) Brass

Explanation:

alloy_of_copper_and_zinc_is_called1556100441.jpg image

Alloy of copper and zinc is called as Brass.

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3 4483

Q:

Select the correct statement about the Heart Valves.

A) Aortic and pulmonary valves control the flow of blood into the heart.	B) The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
C) The tricuspid valve divides the left atrium from the left ventricle.	D) The mitral valve separates the right atrium from the right ventricle.

Answer & Explanation Answer: B) The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.

Explanation:

The correct statement from the given options is

The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.

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Q:

Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?

(1) $K_{2} O < N a_{2} O < A l_{2} O_{3} < M g O$

(2) $A l_{2} O_{3} < M g O < N a_{2} O < K_{2} O$

(3) $M g O < K_{2} O < A l_{2} O_{3} < N a_{2} O$

(4) $N a_{2} O < K_{2} O < M g O < A l_{2} O_{3}$

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Answer & Explanation Answer: B) Option 2

Explanation:

While moving from left to right in periodic table basic character of oxide of elements will decrease.

$∴ \to_{I n c r e a \sin g b a s i c s t r e n g t h}^{A l_{2} O_{3} < M g O < N a_{2} O}$

and while descending in the group basic character of corresponding oxides increases.

$∴ \to_{I n c r e a \sin g b a s i c s t r e n g t h}^{N a_{2} O < K_{2} O}$

$∴ C o r r e c t O r d e r i s A l_{2} O_{3} < M g O < N a_{2} O < K_{2} O$

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Filed Under: Chemistry
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Q:

Concentrating the marketing efforts on one particular segment of consumers is known as ?

A) Ambush Marketing	B) Niche Marketing
C) Content Marketing	D) Cloud Marketing

Answer & Explanation Answer: B) Niche Marketing

Explanation:

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Filed Under: Marketing and Sales

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Q:

The world's largest river is the......

A) The Amazon	B) The Brahmaputra
C) The Mississippi and Missouri	D) The Nile

Answer & Explanation Answer: A) The Amazon

Explanation:

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Filed Under: World Geography

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Q:

'The Race of my Life' the Autobiography has been co-authored by Milkha Singh's daughter, whose name is ____ ?

A) Sonia Sanwalka	B) Mankhia Singh
C) Sanjitia Sardar	D) Poonam Dillo

Answer & Explanation Answer: A) Sonia Sanwalka

Explanation:

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Q:

When is International Mother's Day is observed?

A) December 11	B) November 29
C) 2nd Sunday of May	D) Second Wednesday of October

Answer & Explanation Answer: C) 2nd Sunday of May

Explanation:

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Filed Under: Important Days and Years

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Q:

shimla Agreement 1972 between India & pakistan was signed in

A) Barne's Court	B) Ellersline Building
C) Viceregal Lodge	D) Gorton castle

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