Q:

In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is

1) $A_{2} B_{5}$

2) $A_{3} B_{2}$

3) $A_{2} B_{3}$

4) $A_{3} B_{4}$

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Answer & Explanation Answer: A) Option 1

Explanation:

$Z_{A} = \frac{8}{8}$ ; $Z_{B} = \frac{5}{2}$

So formula of compound is $A B_{\frac{5}{2}}$

i.e., $A_{2} B_{5}$ .

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Filed Under: Chemistry
Exam Prep: AIEEE

13 9863

Q:

Computer storage units smallest to largest?

Answer

The smallest unit of data storage in a computer is called Bit (Binary Digit). Half a byte (four bits) is called a Nibble.

1 bit (binary digit) = the value of 0 or 1

8 bits = 1 byte

1024 bytes = 1 kilobyte

1024 kilobytes = 1 megabyte

1024 megabytes = 1 gigabyte

1024 gigabytes = 1 terabyte

1024 terabytes = 1 petabyte

Hence, Computer storage units smallest to largest i.e, in ascending order is

1 bit < 1 byte < 1 KB < 1 MB < 1 GB < 1TB < 1 PB.

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Subject: Computer Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Software Architect , Project Manager , IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

9 9862

Q:

A universal recipient belongs to the blood group

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

Answer & Explanation Answer: A) AB

Explanation:

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Filed Under: General Awareness

44 9862

Q:

The DBA can set the registry variable DB2_HASH_JOIN on or off because:

A) hash joins may require more resources to run.	B) hash joins are not used unless outer joins are requested.
C) If hash joins are enabled, no other join method can be used.	D) Hash joins are only needed when the tables are portioned using hash keys.

Answer & Explanation Answer: A) hash joins may require more resources to run.

Explanation:

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Filed Under: IBM Certification

28 9853

Q:

During Akbar's reign the most common gold coin was Illahi, which in value was equal to

A) 10 rupee silver coins	B) 12 rupee silver coins
C) 15 rupee silver coins	D) 20 rupee silver coins

Answer & Explanation Answer: A) 10 rupee silver coins

Explanation:

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Filed Under: Indian History

10 9850

Q:

Uber Cup is associated with

Answer

Women's badminton

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Subject: Sports

31 9844

Q:

The fundamental particles present in equal numbers in neutral atoms are

A) protons and electrons	B) neutrons and electrons
C) protons and neutrons	D) protons and positrons

Answer & Explanation Answer: A) protons and electrons

Explanation:

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Filed Under: Chemistry

17 9842

Q:

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)

A) 204.60 g	B) 304.30 g
C) 804.32 g	D) 400.00 g

Answer & Explanation Answer: C) 804.32 g

Explanation:

$∆ T_{f} = k_{f} . m$

for ethylene glycol in aq. solution

$∆ T_{f} = k_{f} \frac{w}{m o l . w t} \times \frac{1000}{w t . o f s o l v e n t} 6 = \frac{1.86 x w x 1000}{62 x 4000}$

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