46. Who was the chairman of University Education Commission set up in 1948?
a) Dr S.Radhakrishnan
b) Dr D.S.Kothari
c) Maulana Abdul Kalam Azad
d) C.D.Deshmukh
Answer:
a) Dr S.Radhakrishnan
Explanation:
The Government of India appointed the University Education Commission under the chairmanship of Dr. S. Radhakrishnan in 1948 to report on Indian university education.
47. Which of the following salts in water causes ‘Blue Baby Syndrome’?
a) Sulphates
b) Carbonates
c) Chlorides
d) Nitrates
Answer:
d) Nitrates
Explanation:
Blue Baby Syndrome (methemoglobinemia) is most commonly caused by high levels of nitrates in drinking water, which impairs the blood’s ability to carry oxygen.
48. The ages of two persons differ by 16 years. If 6 years ago, the elder one be 3 times as old as the younger one, find their present ages.
a) 15 and 25 years
b) 14 and 30 years
c) 20 and 36 years
d) 18 and 34 years
Answer:
b) 14 and 30 years
Explanation:
Let the younger be Y and elder be E. E – Y = 16. Six years ago: (E – 6) = 3(Y – 6). Substitute E = Y + 16: (Y + 10) = 3Y – 18. Solving gives 2Y = 28, so Y = 14. Thus, E = 30.
49. 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?
a) 12
b) 18
c) 22
d) 24
Answer:
d) 24
Explanation:
Using the formula M1 * D1 = M2 * D2. We get 36 * 18 = 27 * D2. D2 = (36 * 18) / 27 = 24 days.
50. If Peter can cover a certain distance in 1 hr 24 min, by covering 2/3 of the distance at 4 kmph and the rest at 5kmph.Find the total distance?
a) 8 km
b) 12 km
c) 6 km
d) 7 km
Answer:
c) 6 km
Explanation:
Let the total distance be x km. Time = 1 hr 24 mins = 1.4 hours. The time taken is (2x/3)/4 + (x/3)/5 = 1.4. This simplifies to 2x/12 + x/15 = 1.4, which is x/6 + x/15 = 1.4. Combining gives 7x/30 = 1.4, so x = 6.
