691: Consider the following minerals:
1. Calcium
2. Iron
3. Sodium
Which of the minerals given above is/are required by human body for the concentration of muscles?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
692: Which one of the following pairs is not correctly matched ?
(a) T. S. Krishnamurthy : Former Chief Election Commissioner of India
(b) K. C. Pant : Chairman, Tenth Finance Commission of India
(c) A. M. Khusro : Former Chairman, Union Public Service Commission
(d) R. C. Lahoti : Former Chief Justice of India
693: A person earns Rs. 2000 per month over and above his salary as additional charge allowance. However, 30% of this additional income will be deducted as additional income-tax at source. If the person would deposit Rs. 1000 per month on a long-term saving fetching 12% interest his tax liability on the additional allowance would reduce to 10%. What is the effective interest for this person for money invested in the long-term savings scheme ?
(a) 12%
(b) 18%
(c) 19%
(d) 20%
694: The first writer to use Urdu as the medium of poetic expression was
(a) Amir Khusru
(b) Mirza Ghalib
(c) Bahadur Shah Zafar
(d) Faiz
695: Seasons on the Earth are caused due to
(a) The elliptical orbit of the Earth
(b) Alteration/change in the speed of revolution of the Earth
(c) Inclination of the Earth on its axis of rotation
(d) Differences in the amount of energy received from the Sun