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

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

=> w = 800 g

So, the weight of solute should be more than 800 g.

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Filed Under: Chemistry
Exam Prep: AIEEE

8 9166

Q:

Select the antonym of

sortie

A) raid	B) assault
C) sally	D) retreat

Answer & Explanation Answer: D) retreat

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 9165

Q:

What is the main reason the OSI Model was created?

Answer

The OSI Model is used as a reference model.

The primary reason the OSI model was created was so that different networks could inter-operate. Hence, different networks could communicate.

Workspace

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Subject: Networking
Job Role: Analyst , Bank Clerk , Database Administration , Network Engineer

20 9163

Q:

Parenthesis is never required in Postfix or Prefix expressions

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

Parenthesis is not required because the order of the operators in the postfix /prefix expressions determines the actual order of operations in evaluating the expression

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Subject: Database
Job Role: Database Administration

3 9154

Q:

Which is the point from where an azimuth originates?

A) South	B) North
C) East	D) West

Answer & Explanation Answer: B) North

Explanation:

The azimuth originates at true North i.e, the azimuth originates from the north point. It is a measure of how far an object forms the observer's north point.

Azimuth is a technical mapping term which is used to describe the direction of an angle between north and south on a compass circle through which the circle line passes. It is the most common military method to express direction. When using an azimuth, the point from which the azimuth originates is the center of an imaginary circle.

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer

8 9149

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 9148

Q:

Which of the following rivers of peninsular India is distinct from the remaining three?

A) Narmada	B) Cauvery
C) Krishna	D) Godavari

Answer & Explanation Answer: A) Narmada

Explanation:

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Filed Under: Indian Geography
Exam Prep: Bank Exams

1 9137

Q:

Correct answer for the given blank out of the four alternatives.

The main failings were of conception and a political willingness to settle _________ easy options. _______________ the expansive declarationsof the need "to maintain effective security of all nuclear materials, _______________ includes nuclear materials used in nuclear weapons”, thesummits narrowed their _______________ to civilian holdings __________________ nonnuclear weapon states.

the summits narrowed their ______________

A) view	B) focus
C) attention	D) vision

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