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Q:

The carbon tetrachloride molecule (CCl4) is

A) a nonpolar molecule with polar bonds B) a nonpolar molecule with nonpolar bonds
C) a polar molecule with polar bonds D) a polar molecule with nonploar bonds
 
Answer & Explanation Answer: A) a nonpolar molecule with polar bonds

Explanation:

The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.

 

When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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4 2815
Q:

Database is a collection of concepts that can be used to describe the structure of a database

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Database provides necessary means to achieve this abstraction. By structure of a database we mean the data types, relations, and constraints that should hold on the data.

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Subject: Database
Job Role: Database Administration

0 2814
Q:

"Indo - ________" joint army exercise 'Prabal Dostyk 2017' has started in Himachal Pradesh.

A) Kazakhstan B) Japan
C) Sri Lanka D) Nepal
 
Answer & Explanation Answer: A) Kazakhstan

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams
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14 2814
Q:

 A transaction for which all committed changes are permanent is called:

A) atomic. B) consistent.
C) isolated. D) durable.
 
Answer & Explanation Answer: D) durable.

Explanation:
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Filed Under: Database

1 2813
Q:

We Can still delete a row from primary table if there are related rows in secondary table once a refferential integrity is enforced

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Can’t delete a row from primary table if there are related rows in secondary table.

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Subject: Database
Job Role: Database Administration

0 2812
Q:

The country which covers two continents is 

A) USSR B) Canada
C) Australia D) Indonesia
 
Answer & Explanation Answer: A) USSR

Explanation:

The USSR( now a Common Wealth of Independent States) is spread over Europe and Asia

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Filed Under: World Geography

3 2812
Q:

The more you take away the larger it becomes.

What is that?

Answer

A Hole.


When you are digging a hole the more you take out the soil, the igger the hole becomes.

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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3 2810
Q:

In which city the world's tallest sandcastle has been built  ?

A) Duisburg B) Berlin
C) Havana D) Paris
 
Answer & Explanation Answer: A) Duisburg

Explanation:
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Filed Under: Famous Places
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