Q:

The direction of heat flow between two objects depends on

A) Their masses	B) Their heat contents
C) Their temperatures	D) Whether they are in solid, liquid or gaseous state

Answer & Explanation Answer: C) Their temperatures

Explanation:

Heat always flows from a body at higher temperature to a body at a lower temperature.

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Filed Under: Physics

43 10899

Q:

Find the missing number in the given puzzle?

missing_number_puzzle1546602135.jpg image

A) 963	B) 696
C) 969	D) 966

Answer & Explanation Answer: C) 969

Explanation:

1 + 1 = 121 = 1x1 1+1 1x1

1 + 2 = 134 = 1x1 1+2 2x2

2 + 2 = 444 = 2x2 2+2 2x2

3 + 2 = 954 = 3x3 3+2 2x2

3 + 3 = ?

Similarly, 3x3 3+3 3x3 = 969

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Filed Under: Number Puzzles
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

40 10893

Q:

The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA ?

A) 4th	B) 2nd
C) 3rd	D) 1st

Answer & Explanation Answer: B) 2nd

Explanation:

RNA has hydroxy group attached at the 2nd C-atom while DNA does not.

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Filed Under: Chemistry
Exam Prep: AIEEE

21 10885

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

6 10879

Q:

It is not advisable to sleep under a tree at night because of release of

A) oxygen in a lesser quantity than the required levels	B) oxygen in large amounts
C) carbon monoxide	D) carbon dioxide

Answer & Explanation Answer: D) carbon dioxide

Explanation:

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Filed Under: General Awareness

54 10876

Q:

Compatibility in regard to computers refers to ________

A) The software doing the right job for the user	B) It being versatile enough to handle the job
C) The software being able to run on the computer	D) Software running with other previously installed software

Answer & Explanation Answer: D) Software running with other previously installed software

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams

42 10875

Q:

Solve the following equations and find the value of abc?

A) 3	B) 6
C) 9	D) 12

Answer & Explanation Answer: B) 6

Explanation:

From the given equations,

$(a + b + c)^{2} = a^{2} + b^{2} + c^{2} + 2 (ab + bc + ca)$
${(6)}^{2} = 14 + 2 (ab + bc + ca)$
36 - 14 = 2(ab + bc + ca)
22/2 = ab + bc + ca
ab + bc + ca = 11

$a^{3} + b^{3} + c^{3} - 3 abc = (a + b + c) (a^{2} + b^{2} + c^{2} - ab - bc - ca)$
= (6) (14 - 11)
=(6)(3)
=18

Since, $a^{3} + b^{3} + c^{3} - 3 abc = 18$

36 - 3abc = 18

-3abc = 18 - 36

-3abc = -18

abc = 6.

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Filed Under: Math Puzzles
Exam Prep: Bank Exams , CAT

37 10872

Q:

Who amongst the following is the author of the book ' Colours of the Rainbow '

A) A.V.Kamath	B) Anita Nayyar
C) Pritish Nandy	D) Ranjit Biswas

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