Correct Answer:- Option-D
Question29:-The Scientist who gave Chromatography concept
A:-Berzelius
B:-Avogadro
C:-Tswett
D:-Lavoiser
Correct Answer:- Option-C
Question30:-The marsh gas detector used by miners works on the principle of
A:-Difference in rate of diffusion of gases
B:-Avogadro's hypothesis
C:-Gay Lucas's law of gaseous volume
D:-Berzelius hypothesis
Correct Answer:- Option-A
Question31:-The shape of 2-butene is
கோப்ரா
B:-Planar
C:-Tetrahedral
D:-Pyramidal
Correct Answer:- Option-B
Question32:-2-Bromopentane is heated with potassium ethoxide in ethanol the major product is
A:-trans-pent-2-ene
B:-2-etoxypentane
C:-pent-1-ene
D:-cis-pent-2-ene
Correct Answer:- Option-A
Question33:-Di alkyl sulphides are known as
A:-Sulphonal
B:-Thioesters
C:-Mercaptan
D:-Thicethers
Correct Answer:- Option-D
Question34:-The explosive nitroglycerine is
۸:- 500
B:-asalt
C:-a complex compound
D:-an ester
Correct Answer:- Option-D
Question35:-Tin plague means
A:-Tin plating
B:-Conversion of white tin to grey tin
C:-Emission of sound white blending tin plate
D:-Conversion of stannous salt to stannic salt
Correct Answer:- Option-B
Question36:-Which makes use of Tyndall effect 7
A:-Ultrafilter
B:-Ultracentrifuge
C:-Ultramicroscope
D:-All the above
Correct Answer:- Option-C
Question37:-Which of the most effective in causing the coagulation of a positively charged "Fe(OH)_(3)" sol 7
4:10 3^(~`
8:-90 4-2
‏ادعو مومع‎
5:14) 6 हा
Correct Answer:- Option-D
Question38:-A non-narcotic analgesic
A:-lbuprofen
B:-Coteine
C:-Herion