86: Which of the following is not an alloy?
(a) Brass
(b) Bronze
(c) Steel
(d) Zinc
87: Consider the following statements:
1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes.
2. Along the mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes.
Which of the statements given above is are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 and 2
88: Which bacterial strain, developed from natural isolates by genetic manipulations, can be used for treating oil spills ?
(a) Agrobacterium
(b) Pseudomonas
(c) Nitrosomonas
(d) Clostridium
89: Which one of the following statements is not correct?
(a) The Western Ghats are relatively higher in their northern region.
(b) The Anai Mudi is the highest peak in the Western Ghats.
(c) Tapi river lies to the south of Satpura.
(d) The Narmada and the Tapi river valleys are said to be old rift valleys.
90: Which of the following pairs are correctly matched?
Enterprise : Industrial Group
1. VSNL : Bharati Group
2. Mundra Special Economic Zone Ltd. : Adani Group
3. CMC Ltd. : TATA Group
4. IPCL : Reliance Group
Select the correct answer using the codes given below:
(a) 1, 2 and 4
(b) 1, 2 and 3
(c) 3 and 4
(d) 2, 3 and 4