Q:

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :

A) 3:4	B) 5:4
C) 5:1	D) 3:2

Answer & Explanation Answer: D) 3:2

Explanation:

In series : E1 + E2 = K(50)

In parallel : E1 - E2 = K(10)

E1 + E2 / E1 - E2 = 5/1

=> E1/E2 = 3/2

The emf's are in the ratio of 3:2.

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Filed Under: Physics
Exam Prep: AIEEE

40 11086

Q:

The metal which reacts most violently with with cold water is

A) calcium	B) sodium
C) magnesium	D) potassium

Answer & Explanation Answer: D) potassium

Explanation:

Potassium reacts violently with water liberating hydrogen. The reaction is so violent that the liberated hydrogen catches fire.

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Filed Under: Chemistry

47 11084

Q:

Improve the bracketed part of the sentence.

A beautiful landscape, full of green vegetation, will not just attract our attention but (fill us) with infinite satisfaction.

A) will fill us	B) filled us
C) fill them	D) No improvement

Answer & Explanation Answer: A) will fill us

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 11084

Q:

The Vikramshila Mahavihara, a great centre of education, was founded by

A) Baladitya	B) Harsha
C) Gopala	D) Dharmapala

Answer & Explanation Answer: D) Dharmapala

Explanation:

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Filed Under: Indian History

12 11084

Q:

Select the antonym of

vigour

A) lethargy	B) fettle
C) kilter	D) robust

Answer & Explanation Answer: A) lethargy

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 11082

Q:

The common name for the crime of stealing passwords is

A) Spoofing	B) Surfing
C) Identity Theft	D) Speeling

Answer & Explanation Answer: A) Spoofing

Explanation:

A spoofing attack is a situation in which one individual or program effectively disguises or mask as another by falsifying information and thereby gaining up an ill-conceived advantage. It may use for stealing password or IP addresses.

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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer , Project Manager

18 11070

Q:

Burning Magnesium ribbon produces white ash, which dissolves in water to form____.

A) Magnesium Halides	B) Magnesium Oxide
C) Magnesium Hydroxide	D) Magnesium Sulphate

Answer & Explanation Answer: C) Magnesium Hydroxide

Explanation:

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

1 11064

Q:

Improve the bracketed part of the sentence.

The pilgrim (lain) in the shade of the tree.

A) lied	B) laid
C) lay	D) no improvement

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