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Q:

The first indication that a stable nucleus can be broken down was afforded by

A) Rutherford	B) Madam Curie
C) Soddy	D) Schmidt

Answer & Explanation Answer: A) Rutherford

Explanation:

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Filed Under: Chemistry

Q:

Of the following radiations, the most easily stopped by air

A) alpha - rays	B) beta - rays
C) gamma -rays	D) x - rays

Answer & Explanation Answer: A) alpha - rays

Explanation:

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Filed Under: Chemistry

Q:

In a family, there are six members A, B, C, D, E and F.

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is F related to C ?

A) Mother	B) Sister
C) Aunt	D) Sister-in-law

Answer & Explanation Answer: A) Mother

Explanation:

A is a male and married to B. So, A is the husband and B is the wife. C is the brother of A. D is the son of C. E, who is the sister of D will be the daughter of C. B is the daughter-in-law of F whose husband has died means F is the mother of A.

F is the mother of A and C is the brother of A. So, F is the mother C.

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Filed Under: Blood Relations

Q:

In a family, there are six members A, B, C, D, E and F.

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died.

How many male members are there in the family ?

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

Answer & Explanation Answer: C) 3

Explanation:

A is a male and married to B. So, A is the husband and B is the wife. C is the brother of A. D is the son of C. E, who is the sister of D will be the daughter of C. B is the daughter-in-law of F whose husband has died means F is the mother of A.

A is a male. B. the wife, is female. C. the brother, is male. D. the son, is male. E, the sister, is female. F, the mother, is a female. So, there are three males.

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Filed Under: Blood Relations

Q:

In a family, there are six members A, B, C, D, E and F.

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. Who is C to B ?

A) Brother	B) Son-in-Law
C) Brother-in-Law	D) None of these

Answer & Explanation Answer: C) Brother-in-Law

Explanation:

A is a male and married to B. So, A is the husband and B is the wife. C is the brother of A. D is the son of C. E, who is the sister of D will be the daughter of C. B is the daughter-in-law of F whose husband has died means F is the mother of A.

C is the brother of A who is the husband of B. So, C is the brother-in-law of B

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Filed Under: Blood Relations

Q:

In a family, there are six members A, B, C, D, E and F.

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is F related to A ?

A) Mother	B) Sister
C) Mother-in-law	D) none of these

Answer & Explanation Answer: A) Mother

Explanation:

A is a male and married to B. So, A is the husband and B is the wife. C is the brother of A. D is the son of C. E, who is the sister of D will be the daughter of C. B is the daughter-in-law of F whose husband has died means F is the mother of A.

Clearly, F is the mother of A.

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Filed Under: Blood Relations

Q:

A, B, C, D, E, F and G are members of a family consisting of four adults and three children, two of whom, F and G are girls. A and D are brothers and A is a doctor. E is an engineer married to one of the brothers and has two children. if is married to D and G is their child. Who is C ?

A) A's son	B) E's daughter
C) F's father	D) G's brother

Answer & Explanation Answer: A) A's son

Explanation:

E is mamed to A or D. But B is marned to D. Thus, E is married to A.

Thus, A, B, C, D, E are the four adults and C, F, G are the three children in the family. B and D have a child G. A and E have two children. They are C and F Now. only F and G are girls.

So, C is a boy. Thus, C is A's or E's son.

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Filed Under: Blood Relations

Q:

If the length of the diagonal of a square is 20cm,then its perimeter must be

a. $40 \sqrt{2}$ cm b. $30 \sqrt{2}$ cm c. 10cm d. 15 $\sqrt{2}$ cm

A) a	B) b
C) c	D) d

Answer & Explanation Answer: A) a

Explanation:

We know that d=√2s

Given diagonal = 20 cm

=> s = 20/ $\sqrt{2}$ cm

Therefore, perimeter of the square is 4s = 4 x 20/ $\sqrt{2}$ = 40 $\sqrt{2}$ cm.

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Filed Under: Area
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