2486: Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?
(a) Methane, ethane, propane and butane
(b) Propane, butane, ethane and methane
(c) Butane, ethane, propane and methane
(d) Butane, propane, ethane and methane
2487: Which of the following pairs of states and their important crops are correctly matched ?
I. Kerala : Tapioca
II. Maharashtra : Cotton
III. W. Bengal : Jute
IV. Gujarat : Groundnut
Select the correct answer using the codes given below :
Codes :
(a) I, II and III
(b) I, II and IV
(c) I, III and IV
(d) II, III and IV
2488: Which one of the following statements regarding the office of the Speaker is correct ?
(a) He holds office during the pleasure of the President
(b) He need not be a member of the House at the time of his election but has to become a member of the House within six months from the date of his election
(c) He loses his office if the House is dissolved before the end of its normal tenure
(d) If he intends to resign, the letter of his resignation is to be addressed to the Deputy Speaker
2489: What is the increasing order of the wavelengths of the following colours?
1. Orange
2. Indigo
3. Yellow
4. Violet
(a) 1, 2, 3 and 4
(b) 3, 1, 4 and 2
(c) 1, 3, 2 and 4
(d) 4, 2, 3 and 1
2490: The staple commodities of export by the English East India Company from Bengal in the middle of the 18th century were
(a) Raw cotton, oil-seeds and opium
(b) Sugar, salt, zinc and lead
(c) Copper, silver, gold, spices and tea
(d) Cotton, silk, saltpetre and opium