2081: The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save Rs. 600 per month. What is their total monthly income ?
(a) Rs. 8,400
(b) Rs. 5,600
(c) Rs. 4,200
(d) Rs. 2,800
2082: 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
2083: The term "two-state solution" is sometimes mentioned in the news in the context of the
affairs of
(a) China
(b) Israel
(c) Iraq
(d) Yemen
2084: Who among the following wrote the book Babuvivah?
(a) Rabindranath Tagore
(b) Raja Rammohan Roy
(c) Ishwar Chandra Vidyasagar
(d) Pandita Rambai
2085: In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?
1. Carbon dioxide
2. Carbon monoxide
3. Nitrogen dioxide
4. Sulfur dioxide
5. Methane
Select the correct answer using the code given below.
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1, 4 and 5 only
(d) 1, 2, 3, 4 and 5