Q:

Temporary hardness is due to the presence of

A) Calcium carbonate	B) calcium bicarbonate
C) magnesium sulphate	D) calcium sulphate

Answer & Explanation Answer: B) calcium bicarbonate

Explanation:

Temporary hardness is due to the presence of soluble bicarbonates of calcium and magnesium in water. Permanent hardness is due to the presence of sulphates and chlorides of calcium and magnesium.

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Filed Under: Chemistry

41 16168

Q:

Gondwana coalfields are found in

A) Assam	B) Madhya Pradesh
C) Meghalaya	D) Jammu & Kashmir

Answer & Explanation Answer: B) Madhya Pradesh

Explanation:

Nearly 95% of india's coal is from the Gondwana formation (which is in the Satpuras) and is found in Bihar, Madhya Pradesh, Orissa, West Bengal, Maharashtra and Andhra Pradesh. Tertiary variety is found in Assam, Arunachal Pradesh, Meghalaya, Nagaland, and Jammu and Kashmir, Lingite reserves occur in Gujarat, Jammu and Kashmir, Rajasthan and Tamilnadu.

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Filed Under: Indian Geography

44 16164

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 16162

Q:

Mudumalai Sanctuary is famous for

A) Tigers	B) Birds
C) Elephants	D) Bisons

Answer & Explanation Answer: A) Tigers

Explanation:

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Filed Under: Indian Geography

95 16161

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:

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 16131

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 16106

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