4321: With reference to the scientific progress of ancient India, which of the statements given below are correct?
1. Different kinds of specialized surgical instruments were in common use by 1st century AD.
2. Transplant of internal organs in the human body had begun by the beginning of 3rd century AD.
3. The concept of sine of an angle was known in 5th century AD.
4. The concept of cyclic quadrilaterals was known in 7th century AD.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
4322: More than 40 Heads of States/Governments were invited by Vladimir Putin in May 2003 to:
(a) Discuss the issues related to the rehabilitation of Iraq
(b) Celebrate the tricentenary of the city of St Petersburg
(c) Convene a meeting of European and CIS countries to discuss the issue of missile shield for European and CIS countries
(d) Develop the strategies for containing global terrorism
4323: Pearls are formed inside:
(a) Squids
(b) Snails
(c) Oysters
(d) Mollusks
4324: Assertion (A) :
Floods are a recurring feature in the Indo-Gangetic Plain
Reason (R) :
The Indo-Gangetic Plain is built of porous and soft alluvium
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
4325: The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands. Which one of the following endocrine glands can function independent of the pituitary gland ?
(a) Thyroid
(b) Gonads
(c) Adrenals
(d) Parathyroid