2646: Two numbers X and Y are respectively 20% and 28% less than a third number Z. By what percentage is the number Y less than the number X ?
(A) 8%
(B) 9%
(C) 10%
(D) 12%
2647: A class of animals known as Marsupials is a characteristic feature of
(a) Africa
(b) Australia
(c) South America
(d) South-East Asia
2648: Consider the following pairs:
Commonly used material vs. Unwanted or controversial chemicals found in them
1. Lipstick: Lead
2. Soft drinks: Brominated vegetable oils
3. Chinese fast food: Monosodium glutamate
Which of the pairs given above is/are correctly matched?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2649: A ship sailing from the eastern extremity of the Aleutian Islands to Dutch harbour crosses 180° meridian at 23.30 hrs on January 1, 1999. What time and date will be recorded by the captain of the ship in his diary after one-hour journey from the point of crossing of the meridian ?
(a) January 1, 0030 hrs
(b) January 2, 0030 hrs
(c) January 3, 0030 hrs
(d) January 4, 0030 hrs
2650: Municipal water in India is generally treated with:
(a) Chlorine
(b) Potassium permanganate
(c) Sodium Chloride
(d) Sodium Carbonate