3256: Which one of the following is in the correct sequential order in which these appeared under simulated primitive earth condition ?
(a) Methane, Hydrogen cyanide, nitriles, aminoacids
(b) Hydrogen cyanide, methane, nitriles, aminoacids
(c) Aminoacids, nitriles. Hydrogen cyanide, methane
(d) Nitriles, aminoacids, methane, Hydrogen cyanide
3257: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
(Minerals) (Mining area)
I. Graphite (A) Bellary
II. Lead (B) Didwana
III. Salt (C) Rampa
IV. Silver (D) Zawar
Codes:
(a) I-C, II-D, III-A, IV-B
(b) I-A, II-D, III-B, IV-C
(c) I-C, II-A, III-D, IV-B
(d) I-B, II-C, III-A, IV-D
3258: Consider the following pairs:
Large Bank : Country of origin
1. ABN Amro Bank : USA
2. Barclays Bank : UK
3. Kookmin Bank : Japan
Which of the above pairs is/are correctly matched?
(a) 1 only
(b) 1 & 2
(c) 2 only
(d) 2 & 3
3259: Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition ?
(a) When inhaled into the human body, CO is converted into CO2
(b) The inhaled CO has much higher affinity for haemoglobin as compared to oxygen
(c) The inhaled CO destroys the chemical structure of haemoglobin
(d) The inhaled CO adversely affects the respiratory centre in the brain
3260: Water hyacinth is related to:
(a) Lemna
(b) Pistia
(c) Eichhornia
(d) None of these