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 4890

Q:

Who has become the first cricketer to score 10,000 runs in T20 cricket ?

A) David Warner	B) Virat Kohli
C) Chris Gayle	D) Suresh Raina

Answer & Explanation Answer: C) Chris Gayle

Explanation:

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10 4889

Q:

Which of the following nations in India sub-continent generates about 5000 mw electricity the excesss of which would be imported by india?

A) Nepal	B) Bhutan
C) Bangladesh	D) Myanmar

Answer & Explanation Answer: B) Bhutan

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams
Job Role: Bank PO

5 4888

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 4885

Q:

First Afghan War took place in the year

A) 1849	B) 1839
C) 1858	D) 1869

Answer & Explanation Answer: B) 1839

Explanation:

The First Anglo-Afghan War also known as Disaster in Afghanistan was fought between British imperial India and The Emirate of Afghanistan from 1839 to 1842.

A British-Indian force attacks Ghazni fort during the First Afghan War, 1839.

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Filed Under: Indian History
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13 4884

Q:

Find the logic in the given puzzle?

Find_The_Logic_In_The_Question1565001003.jpg image

Answer

Given that, a woman has seven children. Half of them are boys.

Half of 7 is 3.5 which is not possible. And it is possible in only one way that all the children must be boys. Then half of them are boys.

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
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47 4881

Q:

Which is the most beautiful animal in the cat family?

Answer

Snow Leopard

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Subject: Animals and Birds

32 4880

Q:

Can character data be stored in computer memory?

A) Yes---a primitive data type is used to store characters	B) No---computer memory can only store patterns
C) Yes---characters are stored in special memory	D) No---computers can only store numbers

Answer & Explanation Answer: A) Yes---a primitive data type is used to store characters

Explanation:

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Filed Under: Computer
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7 4880

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