131: 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
132: Which among the following events happened earliest ?
(a) Swami Dayanand established AryaSamaj.
(b) Dinabandhu Mitra wrote Neeldarpan.
(c) Bankim Chandra Chattopadhyay wrote Anandmath.
(d) Satyendranath Tagore became the first Indian to succeed in the Indian Civil Services Examination.
133: Four wires of same material and of dimensions as under as stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?
(a) Wire of 1 m length and 2 mm diameter
(b) Wire of 2 m length and 2 mm diameter
(c) Wire of 3 m length and 1.5 mm diameter
(d) Wire of 1 m length and 1 mm diameter
134: The satellites of which one of the following countries have helped in the preparation of a detailed and complete map of Antarctica ?
(a) Canada
(b) France
(c) Russia
(d) USA
135: In the Indian context the term De-notified tribes refers to
(a) tribes which are aboriginals
(b) nomadic tribes
(c) tribes practising shifting cultivation
(d) tribes which were earlier classified as criminal tribes