Q:

Which of the following is NOT a constituent of xylem?

A) Tracheids	B) Companion cells
C) Vessels	D) Xylem parenchyma

Answer & Explanation Answer: B) Companion cells

Explanation:

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Filed Under: Biology
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Q:

Which of the following is essential for the synthesis of thyroxin?

A) Potassium	B) Calcium
C) Iodine	D) Sodium

Answer & Explanation Answer: C) Iodine

Explanation:

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Filed Under: Chemistry
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Q:

In an acid base reaction which product is produced along with a salt?

A) Hydrogen gas	B) Water
C) Oxygen gas	D) Carbon dioxide

Answer & Explanation Answer: B) Water

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Q:

In which year, Shivaji was crowned as the Chhatrapati?

A) 1608	B) 1646
C) 1674	D) 1710

Answer & Explanation Answer: C) 1674

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Filed Under: Indian History
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Q:

The Andaman is separated from Nicobar by which water body?

A) 11° channel	B) 10° Channel
C) Palk Strait	D) Gulf of Mannar

Answer & Explanation Answer: A) 11° channel

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Filed Under: World Geography

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Q:

What is the altitude of an equilateral triangle whose side is 12 cm?

A) 6√3 cm	B) 3√3 cm
C) 6√2 cm	D) 4√2 cm

Answer & Explanation Answer: A) 6√3 cm

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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

What are the names of the two identical long tailed macaques cloned by the Chinese Scientists?

A) Long Hong and Zhua Zhua	B) Zhong-Zhong and Hua Hua
C) Tailong and Shanua	D) Rongla and Shamone

Answer & Explanation Answer: B) Zhong-Zhong and Hua Hua

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Filed Under: Animals and Birds
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Q:

In total internal reflection, the light travel from

A) rarer to denser medium and it occurs with no loss of intensity	B) denser to rarer medium and it occurs with no loss of intensity
C) rarer to denser medium and it occurs with loss of intensity	D) denser to rarer medium and it occurs with loss of intensity

Answer & Explanation Answer: B) denser to rarer medium and it occurs with no loss of intensity

Explanation:

According to wave theories, for Total internal reflection tohappen: Light must travel from denser medium to rarer medium. Angle of incidence should be greater than critical angle. As in case of TIR, the image is perfectly clear, it implies that there has been no loss of intensity.

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