Q:

Which of the following is a CORRECT statement?

A) Only compounds are pure substance	B) Compounds are impure substance
C) Only elements are pure substance	D) Both compounds and elements are pure substance

Answer & Explanation Answer: D) Both compounds and elements are pure substance

Explanation:

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Filed Under: Chemistry
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Q:

The embryo gets nutrition from the mother's blood with the help of a special tissue called

A) Uterus	B) Placenta
C) Cervix	D) Fallopian tube

Answer & Explanation Answer: B) Placenta

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Filed Under: Biology
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Q:

Which one of the following statements is not correct?

A) When total utility is maximum, marginal utility is zero	B) When total utility is decreasing, marginal utility is negative
C) When total utility is increasing, marginal utility is positive	D) When total utility is maximum,marginal and average utility are equal to each other.

Answer & Explanation Answer: D) When total utility is maximum,marginal and average utility are equal to each other.

Explanation:

Total utility -It is total psychological satisfaction which a consumer derives from the consumption of a commodity is known as total utility

Marginal utility -It is anaddition made in total utility by consuming and additional unit of a commodity is known as marginal utility.

•When marginal utility is positive,total utility increases

•When marginal utility is zero,total utility is at maximum

•When marginal utility is negative,total utility decreases

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Filed Under: Indian Economy
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Q:

Intestinal bacteria synthesizes which of the following in the human body?

A) Vitamin K	B) Proteins
C) Fats	D) Vitamin D

Answer & Explanation Answer: A) Vitamin K

Explanation:

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Filed Under: Biology
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Q:

Zeatin is produced in ____ and transported to ___ in the xylem where it promotes cell division.

A) Shoots, Roots,	B) Roots, Shoots
C) Stems, Leaves	D) Leaves, Stems

Answer & Explanation Answer: B) Roots, Shoots

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Filed Under: Biology
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Q:

___ has naked seeds.

A) Pinus	B) Lemon
C) Carrot	D) Wheat

Answer & Explanation Answer: A) Pinus

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Filed Under: Biology
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Q:

Which enzyme has been used by scientists of Massachusetts Institute of Technology to induce plants to give off dim light?

A) Carotenogen	B) Luciferase
C) Reductase	D) Peroxidase

Answer & Explanation Answer: B) Luciferase

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Filed Under: Biology
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Q:

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

There is (A) / few time (B) / for preparation. (C) / No Error (D)

A) A	B) B
C) C	D) D

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