836: Assertion (A) : In the visible spectrum of light, red light is more energetic than green light.
Reason (R) : The wavelength of red light is more than that of green light.
Code:
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
837: Civil Disobedience Movement was started in India in 1930 for:
(a) Home rule
(b) Purna Swaraj
(c) Non-cooperation with British government
(d) Hindu-Muslim unity
838: M.C. Setalvad, B.N. Rao and Alladi Krishnaswamy Iyer were distinguished members of the
(a) Swaraj Party
(b) All-India National Liberal Federation
(c) Madras Labour Union
(d) Servants of India Society
839: The monthly incomes of Peter and Paul are in the ratio of 4 : 3. Their expenses are in the ratio of 3 : 2. If each saves Rs. 600 at the end of the month, their monthly incomes respectively are (in rupees)
(a) 3200 and 2400
(b) 2800 and 2100
(c) 2400 and 1800
(d) 2000 and 1500
840: Most of the explosions in mines occur due to the mixing of
(a) hydrogen with oxygen
(b) oxygen with acetylene
(c) methane with air
(d) carbon dioxide with ethane