2436: 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
2437: 'Mitakshara' is associated with
(a) Yajnawalkya
(b) Poetics
(c) Drama
(d) Grammar
2438: Lake Sambhar is nearest to which one of the following cities of Rajasthan?
(a) Bharatpur
(b) Jaipur
(c) Jodhpur
(d) Udaipur
2439: The Buddhist sect Mahayana formally came into existence during the reign of
(a) Ajatashatru
(b) Ashoka
(c) Dharmapala
(d) Kanishka
2440: With reference to agriculture in India, how can the technique of genome sequencing, often seen in the news, be used in the immediate future?
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3