1026: The length of the longest pole that can be placed in a room 12 m long and 9 m wide and 8 m high is
(a) 12 m
(b) 14 m
(c) 17 m
(d) 21 m
1027: When three coins are tossed together the probability that all coins have the same face up is
(a) 1/3
(b) 1/6
(c) 1/8
(d) None of these
1028: A lot of details, regarding the village administration under the Cholas is provided by the Inscriptions at
(a) Thanjavur
(b) Uraiyur
(c) Kanchipuram
(d) Uttaramerur
1029: Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1. Smelting units
2. Pens and pencils
3. Paints
4. Hair oils and cosmetics
Select the correct answer using the codes given below :
(a) 1, 2 and 3 only
(b) 1 and 3 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
1030: Consider the following statements regarding bones in the human body :
1. They consist of 80% solid matter and 20% water.
2. Solid matter in the bones is made mainly of cartilage.
3. Impregnation of salts including carbonates and phosphates of lime imparts hardness to the bones.
4. In old age, the proportion of lime decreases and bones become brittle and break easily.
Of these statements :
(a) 1, 2 and 3 are correct
(b) 2 and 4 are correct
(c) 2 and 3 are correct
(d) 1, 2, 3 and 4 are correct