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Q:

Gases used in normal welding?

A) Oxygen and Acetylene B) Acetylene and Nitrogen
C) Oxygen, Hydrogen and Acetylene D) Oxygen and Hydrogen
 
Answer & Explanation Answer: A) Oxygen and Acetylene

Explanation:

Normal Gas welding use oxygen-acetylene.

 

Depending on what materials you are welding, there are some more options that might be used.

For example - MIG/TIG use Argon, MAG use an argon-something mix.

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

Which of the following is the world's most poisonous snake called Hydrophis ?

A) Adder B) Boa
C) Cobra D) Sea Snake
 
Answer & Explanation Answer: D) Sea Snake

Explanation:
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Filed Under: Animals and Birds
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Q:

Seagate is manufacturer of

A) harddisk B) earth moving equipment
C) picture tube D) banking software
 
Answer & Explanation Answer: A) harddisk

Explanation:
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Filed Under: Business Awareness

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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:

Antibiotics are mostly obtained from

A) Viruses B) Fungi
C) Bacteria D) Angiosperms
 
Answer & Explanation Answer: B) Fungi

Explanation:
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Filed Under: General Science
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Q:

What is the capital of Bangladesh ?

A) Dhaka B) Chittagong
C) Khulna D) Sylhet
 
Answer & Explanation Answer: A) Dhaka

Explanation:
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Filed Under: Country Capitals

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Q:

Answer the following puzzle

Answer

To the 6


Explanation:


Starting with the top left clockface and working clockwise around the others, the sum of the numbers pointed to by the 2 hands starts at 3 and increases by 2 each time.

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Subject: Clock puzzles

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Q:

A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity  water rises in the tube. The height of water rise in the tube can be increased by 

A) decreasing the radius of the capillary tube B) increasing the radius of the capillary tube
C) increasing the height of water in the vessel D) None of these
 
Answer & Explanation Answer: A) decreasing the radius of the capillary tube

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to (balances) the upward force due to surface tension. So it is clear that if the the bore (radius) to the tube is decreased, the height of the water column in it must be greater.  So, (a) is correct.

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Filed Under: Physics

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