Q:

Sound waves can not travel through a

A) copper wire placed in air	B) silver slab placed in air
C) glass prism placed in water	D) wooden hollow pipe placed in vacuum

Answer & Explanation Answer: D) wooden hollow pipe placed in vacuum

Explanation:

Sound is a kind of energy created when something vibrates. When this vibration reaches an ear, it is translated into what we recognize as a sound. Sound vibration must travel through matter. Therefore, it can travel through air and water but not through vacuum.

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Filed Under: Physics
Exam Prep: Bank Exams

1 16159

Q:

What will output when you compile and run the following code?

#include <stdio.h>
struct student
{

int roll;
int cgpa;
int sgpa[8];

};

void main()
{

struct student s = { 12,8,7,2,5,9 };
int *ptr;
ptr = (int *)&s;
clrscr();
printf( "%d", *(ptr+3) );
getch();

}

A) 8	B) 7
C) 2	D) Compiler error

Answer & Explanation Answer: C) 2

Explanation:

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Filed Under: Programming

1 16150

Q:

The electrochemical cell stops working after some time because ________

A) Electrode potential of both the electrodes becomes zero	B) One of electrodes completely vanishes
C) Electrode potential of both electrodes equalizes	D) The reaction reverses its direction

Answer & Explanation Answer: C) Electrode potential of both electrodes equalizes

Explanation:

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Filed Under: Chemistry

92 16148

Q:

Rearrange the parts of the sentence in correct order.

It is a pity that

P-such violence hardly
Q-comes within the
R-purview of the law

A) QRP	B) RPQ
C) PRQ	D) PQR

Answer & Explanation Answer: D) PQR

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 $d m^{3}$ at 27°C is to a volume of 100 $d m^{3}$

A) 42.3 J/ mole / K	B) 38.3 J/ mole / K
C) 35.8 J/ mole / K	D) 32.3 J/ mole / K

Answer & Explanation Answer: B) 38.3 J/ mole / K

Explanation:

$∆ s = n R \ln \frac{v 2}{v 1}$

$= 2.303 n R \log \frac{v 2}{v 1}$ = $2.303 \times 2 \times 8.314 \times \log (\frac{100}{10})$ = $38.3 J$ $m o l^{- 1}$ $k^{- 1}$

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Filed Under: Chemistry
Exam Prep: AIEEE

43 16136

Q:

_________ provide expansion capability for a computer system

A) Sockets	B) Slots
C) Bytes	D) None of these

Answer & Explanation Answer: B) Slots

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams

74 16130

Q:

Which of the following is a storage device?

A) Floppy discs	B) hard disk drive
C) Optical disc	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Which_of_the_following_is_a_storage_device1554210303.jpg image

All of the above given options are storage devices.

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

37 16104

Q:

Improve the bracketed part of the sentence.

Our biological knowledge of even some of the commonest animals is (embarrassed) slight and it is here that zoos can be of inestimable value in amassing information.

A) embarrass	B) embarrassingly
C) embarrassing	D) No improvement

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