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Q:

What was the religion of Malik Kafur before he entered the service of Ala-ud-din?

A) Zoroastrianism B) Hinduism
C) Buddhism D) Jainism
 
Answer & Explanation Answer: B) Hinduism

Explanation:
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Filed Under: Indian History

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Q:

Gammaxene, D.D.T. & Bleaching powder are important compounds of

A) Nitrogen B) Phosphorus
C) Chlorine D) Sulphur
 
Answer & Explanation Answer: C) Chlorine

Explanation:

Gammaxene, D.D.T. & Bleaching powder are important compounds of Chlorine.

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Filed Under: Chemistry
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Q:

GDP at factor cost is

A) GDP minus indirect taxes plus subsidies B) GNP minus depreciation allowances
C) NNP plus depreciation allowances D) GDP minus subsidies plus indirect taxes
 
Answer & Explanation Answer: A) GDP minus indirect taxes plus subsidies

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Filed Under: Indian Economy

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Q:

 When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

A) first step. B) second step.
C) third step. D) fourth step.
 
Answer & Explanation Answer: C) third step.

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Filed Under: Database

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Q:

Where did India play its 1st One Day International match?

A) Lords B) Headingley
C) Taunton D) The Oval
 
Answer & Explanation Answer: B) Headingley

Explanation:

India play its 1st One Day International match in cricket against England in the year 1974 in Headingley in Leeds.

Where_did_India_play_its_1st_One_Day_International_match1552388512.jpg image

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4 7086
Q:

Which is NOT a good Web security strategy ?

A) Remove unnecessary compilers and interpreters B) Add demo programs, so users can test system without accessing production data
C) Limit the users who can load software, edit or add files D) Restrict access to the Web server keep a minimum number of ports open
 
Answer & Explanation Answer: A) Remove unnecessary compilers and interpreters

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Filed Under: Computer
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20 7084
Q:

Phycology is the branch of botany in which we study about

A) Algae B) Fungi
C) Ecology D) Virus
 
Answer & Explanation Answer: A) Algae

Explanation:
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Filed Under: Biology

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Q:

What is the oxidation number of carbon in NaHCO3?

A) -4 B) -3
C) +4 D) +2
 
Answer & Explanation Answer: C) +4

Explanation:

The given compound is NaHCO3 Sodium bicarbonate which is commonly known as Baking soda.

Oxidation numbers are the charges on ions. When a neutral atom loses electrons it becomes positively charged. When a neutral atom gains electrons it becomes negatively charged.

 

Here the C represents the oxidation state of carbon in this compound. Compounds are electrically neutral, which is why we set the sum of the oxidation states equal to zero.

Sodium has a +1 oxidation state. Hydrogen has a +1 oxidation state. Oxygen has a -2 oxidation state. There are three oxygen atoms, which means the total oxidation state provided by both oxygen ions is -6. Adding up these oxidation states we get:

1 + 1 + (-6) + C = 0

-4 + C = 0

=> C = 4


This means the oxidation state of carbon in this compound is +4.

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