# Exams

• #### TOEFL

Q:

An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?

 A) 360 B) 180 C) 90 D) 60

Explanation:

Angle traced by the hour hand in 6 hours=(360/12)*6

110 51419
Q:

If the diagonal of a rectangle is 17cm long and its perimeter is 46 cm. Find the area of the rectangle.

 A) 110 B) 120 C) 130 D) 140

Explanation:

let length = x and breadth = y then

2(x+y) = 46         =>   x+y = 23

x²+y² = 17² = 289

now (x+y)² = 23²

=> x²+y²+2xy= 529

=> 289+ 2xy = 529

=> xy = 120

area = xy = 120 sq.cm

157 50483
Q:

If log 27 = 1.431, then the value of log 9 is

 A) 0.754 B) 0.854 C) 0.954 D) 0.654

Explanation:

log 27 = 1.431
log$33$ = 1.431
3 log 3 = 1.431
log 3 = 0.477
log 9 = log($32$)= 2 log 3 = (2 x 0.477) = 0.954

86 50432
Q:

Which of the following is a Trans- Himalayan river?

 A) Ganga B) Yamuna C) Indus D) Ravi

Explanation:

Two sub groups of Himalayan Rivers are Trans Himalayan Rivers and Himalayan Rivers.

• Trans Himalayan Rivers :

These rivers originate beyond the Himalayas. They are The Indus, The Sutlej and The Brahmaputra Rivers.

• Himalayan Rivers :

These are the rivers originate from Himalayas. They are The Ganga, The Yamuna and their tributaries.

Filed Under: Indian Geography
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank PO

307 49336
Q:

The Saka Era was founded by

 A) Kadphises I B) Kanishka C) Alexander D) Menander

Explanation:

The Saka Era was founded by Kanishka, the emperor of Kushana empire from the year 78 A.D.

Filed Under: Indian History
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

165 49284
Q:

A computer cannot "boot" if it does not have the _____

 A) Compiler B) Loader C) Operating system D) Assembler

Explanation:

An operating system is the system software that handles the software and hardware resources and provides services for the computer programs. SO without an operating system, a computer cannot "boot".

Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

201 48575
Q:

The blue colour of the clear sky is due to

 A) Diffraction of light B) Dispersion of light C) Reflection of light D) Refraction of light

Explanation:

A clear cloudless day-time sky is blue because molecules in the air dissipate blue light from the sun more than they dissipate red light. When we look towards the sun at sunset, we see red and orange hues on the grounds because the blue light has been scattered out and away from the line of sight.

Filed Under: General Science
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank PO

270 48226
Q:

If the radius of a circle is decreased by 50%, find the percentage decrease in its area.

 A) 55% B) 65% C) 75% D) 85%

Explanation:

New radius = $50100R$$50100R$

Original area =$R2$  and new area = $πR2$

$3πR24*1πR2*100$

Decrease in area = $πR22=πR24$ = 75%