TNPSC Group 2 Official Paper (2016)

Identify the particle physicist through the clues given below

1.He won the Nobel Prize in physics for the year 2013 along with Francois Englert

2. He won the Royal Society's Copley medal on 20, July 2015

Find out the values of a, b, c and d in the following equation

IO₃⁻+aI⁻+bH⁺➝cH₂O+dI₂

Find the pH of a buffer solution containing 0.20 mole per litre sodium acetate and 0.15 mole per litre acetic acid given that dissociation constant of acetic acid is $1.8\times 10^{-5}$

Find the incorrect statement(s) from the following

(i) 2, 4, 5 trichlorophenoxy acetic acid is a herbicide

(ii) Thallium compounds are fumigants

(iii) Organo phosphorus insectides inhibit cholinesterase

(iv) Organo chlorine insectides are stomach poisons

Turpentine is obtained from