Q:

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

Because a table can have only one primary key

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Q:

First team in history to win 100 T-20 matches

Cricket1498883561.jpg image

A) A	B) B
C) C	D) D

Answer & Explanation Answer: C) C

Explanation:

Mumbai Indians

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Filed Under: Sports
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Q:

The vitamin required for coagulation of blood

A) B6	B) c
C) k	D) b

Answer & Explanation Answer: C) k

Explanation:

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Filed Under: Biology

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Q:

Which of the following physiographic feature of India is geologically the oldest?

A) Himalayan Mountain Chain	B) Indus- Ganga Brahmaputra plain
C) The Peninsular Plateau	D) The Coastal Plains

Answer & Explanation Answer: C) The Peninsular Plateau

Explanation:

It is composed of Archaean gneisses and schists

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Filed Under: Indian Geography

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Q:

The command to eliminate a table from a database is

A) REMOVE TABLE CUSTOMER;	B) UPDATE TABLE CUSTOMER;
C) DELETE TABLE CUSTOMER;	D) DROP TABLE CUSTOMER;

Answer & Explanation Answer: D) DROP TABLE CUSTOMER;

Explanation:

The SQL DROP TABLE statement is used to remove a table definition and all data, indexes,...

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Filed Under: Database
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Q:

Which is a pair of allotropes?

A) carbon-16 and carbon-12	B) diamond and graphite
C) carbon dioxide and graphite	D) diamond and carbon dioxide

Answer & Explanation Answer: B) diamond and graphite

Explanation:

Allotropes are the different physical forms of an element. Here in the given options, diamond and graphite are the pair of allotropes of carbon.

Some more examples are Molecular oxygen and ozone are pair of allotropes, Black and red phosphorous are also pairs of allotropes.

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Filed Under: Chemistry
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Q:

Learned indian classical vocalists do not like the accompaniment of a harmonium because

A) tempered scale is used in the harmonium	B) diatonic scale is used in the harmonium
C) notes of the harmonium are too shrill	D) intensity of the notes of the harmonium is too large

Answer & Explanation Answer: A) tempered scale is used in the harmonium

Explanation:

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Filed Under: Physics

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Q:

Which is South Korea's largest car manufacturing

A) Hyundai	B) Honda
C) Suzuki	D) Toyota

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