Q:

A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at :

A) 518 nm	B) 1035 nm
C) 325 nm	D) 743 nm

Answer & Explanation Answer: D) 743 nm

Explanation:

$\frac{1}{λ} = \frac{1}{λ 1} + \frac{1}{λ 2}$

$\frac{1}{355} = \frac{1}{680} + \frac{1}{λ 2}$

$\frac{1}{λ 2} = \frac{680 - 355}{680 \times 355}$

$\Rightarrow λ 2 = 743 n m$ .

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Filed Under: Chemistry
Exam Prep: AIEEE

12 9294

Q:

What holds the sides of the DNA ladder together?

A) Polar covalent bonds	B) Ionic bonds
C) Metallic bonds	D) Covalent bonds

Answer & Explanation Answer: D) Covalent bonds

Explanation:

Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA i.e, A sugar (deoxyribose) and a phosphate.

DNA is a double-stranded molecule twisted into a helix (think of a spiral staircase). Each spiraling strand, comprised of a sugar-phosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding between paired bases. The bases are adenine (A), thymine (T), cytosine (C) and guanine (G). A and T are connected by two hydrogen bonds. G and C are connected by three hydrogen bonds.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk , Bank PO

16 9290

Q:

Rovers Cup is associated with

A) Tennis	B) Football
C) Cricket	D) Hockey

Answer & Explanation Answer: B) Football

Explanation:

Rovers Cup is associated with the sport football in India.

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Filed Under: Sports
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Job Role: Analyst , Bank Clerk , Bank PO

4 9289

Q:

Rearrange the parts of the sentence in correct order.

Even more astonishingly,

P-he cast as "beautiful"
Q-he went on to
R-describe the vote

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

Answer & Explanation Answer: D) QRP

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 9282

Q:

Mr.Meera Sahib Fathima Beevi is distinguished as the first lady

A) Judge of the High Court	B) Governor of a State
C) Judge of the Supreme Court	D) Gold medal winner in Sports

Answer & Explanation Answer: C) Judge of the Supreme Court

Explanation:

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Filed Under: Famous Personalities

18 9281

Q:

Improve the bracketed part of the sentence.

The pool was dry as the water (had been drained off) the day before.

A) has been drained off	B) was drained
C) has been drained away	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

1 9277

Q:

Select the synonym of

to recline

A) to lounge	B) to rewind
C) to sheer	D) to plump

Answer & Explanation Answer: A) to lounge

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 9275

Q:

Which of the following governor generals used to call himself as Bengal Tiger?

A) Lord Clive	B) Warren Hastings
C) Lord Cornwallis	D) Lord Wellesley

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