331: The working principle of a washing machine is
(a) centrifugation
(b) dialysis
(c) reverse osmosis
(d) diffusion
332: Near the end of the year 2006, which one of the following countries was suspended from the Commonwealth after a military coup ?
(a) Tanzania
(b) Fiji
(c) Myanmar
(d) Kenya
333: The medicines which are used to treat diseases caused by allergy are known as
(a) Analgesics
(b) Antihistamines
(c) Antipyretics
(d) Allergens
334: If you walk through countryside, you are likely to see some birds stalking alongside the cattle to seize the insects disturbed by their movement through grasses. Which of the following is / are such bird/birds?
1. Painted Stork
2. Common Myna
3. Black-necked Crane
Select the correct answer using the code given below.
(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
335: The monthly incomes of Peter and Paul are in the ratio of 4 : 3. Their expenses are in the ratio of 3 : 2. If each saves Rs. 600 at the end of the month, their monthly incomes respectively are (in rupees)
(a) 3200 and 2400
(b) 2800 and 2100
(c) 2400 and 1800
(d) 2000 and 1500