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
Exam Prep: AIEEE

14 4479

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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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank PO

8 4477

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

10 4477

Q:

What is the name of the messaging platform to be used by the Indian Army shortly?

A) Safe Communication Network	B) Secure Application for Internet
C) Safe Messaging Service	D) Secure Instant Messaging

Answer & Explanation Answer: B) Secure Application for Internet

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

2 4477

Q:

Which statement about electrons and atomic orbitals is NOT true?

A) An orbital can contain a minimum of two electrons	B) An electron has the same amount of energy in all orbitals
C) An atom’s lowest energy level has only two orbitals	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Yes, all the given statements are NOT true about electrons and atomic orbitals.

True statements are ::

An orbital can contain a maximum of two electrons.

An atom’s lowest energy level has only one orbital.

An electron has different amount of energies in all orbitals.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk , Bank PO

1 4476

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

6 4476

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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Filed Under: Books and Authors
Exam Prep: AIEEE , Bank Exams
Job Role: Bank Clerk , Bank PO

13 4474

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

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