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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14 5470

Q:

English words with similar meaning

A) Relegate - Downgrade	B) Beautiful - Ugly
C) Qualm - Confidence	D) Generic - Branded

Answer & Explanation Answer: A) Relegate - Downgrade

Explanation:

Relegate means Assigning an inferior rank or position to. That means, downgrading or pulling down, lower a person.

All other options have words with opposite in meaning.

Hence, Relegate is an English word which is similar in meaning to Downgrade.

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Filed Under: English
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9 5469

Q:

Persons with which blood group are called universal donors?

A) AB	B) A
C) O	D) B

Answer & Explanation Answer: C) O

Explanation:

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Filed Under: General Science

12 5466

Q:

Guess the Hiding Letter ?

19113839_1330685610371873_3858733463247627315_n1499402539.jpg image

A) D	B) K
C) L	D) G

Answer & Explanation Answer: D) G

Explanation:

Starting from letter 'S' add 5 in the clock wise direction to get the next letter in English alphabets.

Here S + 5 => 19 + 5 = 24 => X

X + 5 = 24 + 5 = 3 => C

Similarly,

B + 5 = G

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Filed Under: Missing letters puzzles
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13 5465

Q:

SQL Server program code that is executed instead of an SQL command that needs to be processed is called

A) INSTEAD OF trigger.	B) BEFORE trigger.
C) AFTER trigger.	D) BEGIN trigger.

Answer & Explanation Answer: A) INSTEAD OF trigger.

Explanation:

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Filed Under: Database

0 5465

Q:

Former Minister Ashwani Kumar has been awarded as Order of Rising Sun by which country ?

A) India	B) China
C) Iraq	D) Japan

Answer & Explanation Answer: D) Japan

Explanation:

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Filed Under: Indian Politics
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17 5464

Q:

Which of the following is "Blue Planet" ?

A) Jupiter	B) Mars
C) Earth	D) Saturn

Answer & Explanation Answer: C) Earth

Explanation:

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Filed Under: Indian Geography

22 5463

Q:

Lamarck's theory of inheritance of acquired characters was challenged by

A) August Weismann	B) Hugo de Vries
C) Herbert Spencer	D) Carl Linnaeus

Answer & Explanation Answer: C) Herbert Spencer

Explanation:

August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.

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Filed Under: Biology

7 5462

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