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 4961

Q:

Who is known as Indian Bismarck

A) Nehru	B) Rajaji
C) Patel	D) Kamraj

Answer & Explanation Answer: C) Patel

Explanation:

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Filed Under: Famous Personalities

3 4960

Q:

In what way does ocean water move globally?

A) Along cold water currents from the equator to the poles.	B) Along warm water currents from the warmer regions to colder regions
C) Along warm water currents from the equator to the poles	D) None of the above

Answer & Explanation Answer: C) Along warm water currents from the equator to the poles

Explanation:

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Filed Under: World Geography
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4 4959

Q:

The nomenclature of the Executives Head of the Government of Jammu and Kashmir was changed from Sadar-i-Riyasat to Governor in 1965 by:

A) a Lok Sabha Resolution	B) the executive order of the Parliament
C) the 6th Amendment in the State Constitution of Jammu and Kashmir	D) the State Government under Article 371

Answer & Explanation Answer: C) the 6th Amendment in the State Constitution of Jammu and Kashmir

Explanation:

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Filed Under: Indian Politics

9 4958

Q:

A pox on you for your loathsome chiding means

A) may you be diseased for your disgusting behavior	B) want to hit you because you've been hiding
C) curse you for your hateful scolding	D) None of the above

Answer & Explanation Answer: C) curse you for your hateful scolding

Explanation:

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Filed Under: English
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0 4958

Q:

Emma Morano, world’s oldest person who died at age 117 was a citizen of which country ?

A) France	B) Greece
C) Italy	D) England

Answer & Explanation Answer: C) Italy

Explanation:

She was born on November 29, 1899. She was from Italy. She held the Guinness World Record titles for oldest living person and oldest living woman.

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6 4955

Q:

How many laws of physics are there?

A) 5	B) 4
C) 3	D) 2

Answer & Explanation Answer: C) 3

Explanation:

Physics has 5 laws. But the 3 laws of Newton has been clubbed together under one Law. Therefore there are 3 Newtons laws of Physics. They are ::

1. Newtons Laws of Motion

a. First Law of Motion

b. Second Law of Motion

C. Third Law of Motion

2. Newtons Law of Cooling

3. Newtons Law of Gravitation.

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Filed Under: Physics
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10 4955

Q:

The grouping of blood is based on substances called

A) antibodies	B) antigens
C) antitoxin	D) enzymes

Answer & Explanation Answer: B) antigens

Explanation:

The red blood corpuscles or Erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen A in their red corpuscles.The AB group persons have both antigen A and antigen B in their erythrocytes.The 'O'group persons have no antigens in their red corpuscles.

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Filed Under: Biology

16 4954

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