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Q:

In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10 kg of pure ghee is added, then the strength of vanaspati ghee becomes 20%. The original quantity was :

A) 10 kg	B) 15 kg
C) 20 kg	D) 25 kg

Answer & Explanation Answer: A) 10 kg

Explanation:

Let the original quantity be x kg. Vanaspati ghee in x kg = (40x / 100 )kg = (2x / 5) kg.

Now, (2x/5)/(x + 10) = 20/100

=> 2x / (5x + 50) = 1/5

=> 5x = 50

=> x = 10.

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Filed Under: Percentage

Q:

A bag contains 600 coins of 25 p denomination and 1200 coins of 50 p denomination. If 12% of 25 p coins and 24% of 50 p coins are removed, the percentage of money removed from the bag is nearly :

A) 21.6 %	B) 15.3 %
C) 14.6 %	D) 12.5 %

Answer & Explanation Answer: A) 21.6 %

Explanation:

Total money = Rs.[600*(25/100)+1200*(50/100)]= Rs. 750.

25 paise coins removed = Rs. (600*12/100) = 72.

50 paise coins removed = Rs. (1200*24/100)= 288.

Money removed =Rs.(72*25/100+288*50/100) = Rs.162.

Required percentage = (162/750*100)% = 21.6 %.

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Filed Under: Percentage

Q:

The ratio 5 : 4 expressed as a percent equals :

A) 12.5 %	B) 40 %
C) 80 %	D) 125 %

Answer & Explanation Answer: D) 125 %

Explanation:

5 : 4 = 5/4 = ( (5/4) x 100 )% = 125%.

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Filed Under: Percentage

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : Eskimos reside in igloos.

Reason (R) : No other material except snow is available.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false.	D) A is false but R is true.

Answer & Explanation Answer: C) A is true but R is false.

Explanation:

Eskimos live in snow houses called igloos because snow, being a bad conductor of heat, these houses are warm inside.

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Filed Under: Assertion and Reason

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : Pluto is the coldest planet

Reason (R) : It receives slanting rays of- the sun.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false.	D) A is false but R is true.

Answer & Explanation Answer: C) A is true but R is false.

Explanation:

Pluto, being farthest from the sun, hardly gets the sun's rays. So, Pluto is the coldest planet.

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Filed Under: Assertion and Reason

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : Pressure cookers are fitted with ebonite handles.

Reason (R) : Ebonite is strong.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false.	D) A is false but R is true.

Answer & Explanation Answer: C) A is true but R is false.

Explanation:

The handles of pressure cookers are made of ebonite because it being a bad conductor of heat, does not heat up.

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Filed Under: Assertion and Reason

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : Diamond is used for cutting glass.

Reason (R) : Diamond has a high refractive index.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false.	D) A is false but R is true.

Answer & Explanation Answer: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

Diamond is very hard due to its rigid three dimensional structure and so, it is used for cutting glass. Refractive index of diamond is high and gives it the greater transparency and brilliance.

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Filed Under: Assertion and Reason

Q:

Who gave the Slogan Inquilab Zindabadh ?

A) M.K.Gandhi	B) Nehru
C) Iqbal	D) Bal Gangadhar Thilak

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