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Q:

Generally covalently bonded molecules ______.

 

I. have high boiling and melting point as compare to ionically bonded molecules

II. poor conductors of electricity

III. have weak intermolecular force

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: C) Only II and III

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

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Q:

Two boxes contain 4 and 16 balls respectively. Two balls in the first box and four in the second, are black. If a box is chosen randomly and two balls are drawn at random from it, what is the
probability that at least one ball is black if the ball is not replaced?

A) 11/20 B) 43/120
C) 77/120 D) 9/20
 
Answer & Explanation Answer: C) 77/120

Explanation:

At least one black can be chosen in two ways from each box:
Now, probability of choosing at least one black ball from first box 

= 1/2 × [ (2C1× 2C1)/4C2 + 2C2/ 4C2 ]= 5/12

Probability of choosing at least one black ball from 2nd box
= 1/2 × [(4C1×12C1)/16C2 + 4C2/ 16C2] = 9/40

Final probability

= 5/12 + 9/40 = (50 + 27)/120 = 77/120

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

4 3317
Q:

Solve this Math puzzle?

math_number_puzzle1538999808.jpg image

A) 96 B) 88
C) 40 D) 19
 
Answer & Explanation Answer: A) 96

Explanation:

The given math puzzle follows a logic that,

1 + 4 = 5 => 1 x 4 + 1 = 5

2 + 5 = 12 => 2 x 5 + 2 = 12

3 + 6 = 21 => 3 x 6 + 3 = 21

 

Similarly,

8 + 11 = > 8 x 11 + 8 = 96.

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Filed Under: Math Puzzles
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

9 3317
Q:

Where is the Morris Canal Located?

A) New Jeresy B) Michigan
C) California D) Washington
 
Answer & Explanation Answer: A) New Jeresy

Explanation:

It is located in New Jeresy

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Filed Under: Famous Places

11 3316
Q:

One of the ingredients of the paste on the side of a match box is 

A) Phosphorus pentaoxide B) Phosphorus trichloride
C) Phosphorus trisulphide D) Phosphorus trioxide
 
Answer & Explanation Answer: C) Phosphorus trisulphide

Explanation:

The paste applied to the side of a match box is a mixture of phosphorus trisulphide, glass powder (or sand) to cause friction and glue (binding material)

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Filed Under: Chemistry

3 3316
Q:

The head quarters of World Trade Organisation(WTO) are at

A) Rome B) Geneva
C) Doha D) New York
 
Answer & Explanation Answer: B) Geneva

Explanation:
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Filed Under: Indian Economy

3 3315
Q:

The roadway linking Mumbai and Agra passes through

A) Nasik and Gwalior B) Pune and Bhopal
C) Badodara and Jhansi D) Jaipur and Kanpur
 
Answer & Explanation Answer: A) Nasik and Gwalior

Explanation:

Thana, Indore and Shivpur are other important junctions on the route.

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Filed Under: Indian Geography

4 3315
Q:

What are software interrupts?

Answer

RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7.

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Subject: Hardware

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