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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12 9270

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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16 9269

Q:

Rearrange the parts of the sentence in correct order.

They are even poorer
P-failure will deprive
Q-them of jobs altogether
R-than farmers; and crop

A) RPQ	B) RQP
C) PQR	D) QPR

Answer & Explanation Answer: A) RPQ

Explanation:

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0 9260

Q:

Rearrange the parts of the sentence in correct order.

The yatra focussed

P-for poor and
Q-marginalised communities
R-on access to development and dignity

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

Answer & Explanation Answer: C) RPQ

Explanation:

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Q:

Which country has made the world’s largest amphibious aircraft named AG600?

A) United States of America	B) Russia
C) China	D) Saudi Arabia

Answer & Explanation Answer: C) China

Explanation:

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0 9257

Q:

___________ provides network backbone and e-governance support to government bodies in India.

A) NIC	B) NASSCOM
C) Department of Information Technology	D) State Bank of India

Answer & Explanation Answer: A) NIC

Explanation:

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Filed Under: Computer
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3 9253

Q:

Rearrange the parts of the sentence in correct order.

Only a country not yet rid

P-of its colonial hangover
Q-and controls, labels dissent as seditious
R-of a government that commands

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

Answer & Explanation Answer: A) PRQ

Explanation:

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0 9252

Q:

Plants synthesis protein from

A) amino acids	B) starch
C) fatty acids	D) sugar

Answer & Explanation Answer: A) amino acids

Explanation:

We know that, proteins are polymers of amino acids. So, plants are also used to synthesise protein from amino acids. Hence, plants synthesis protein from amino acids in the presence of ATP by specific synthetases.

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11 9249

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