Chemistry Mcqs No 7

There are 10 MCQS.Choose the best option that you find correct.Give all of your Answers in one comment (e.g :1A,2B,3C....)

(1) The carbon atom in Carbonyl group is__ hybridized.
A. Sp
B. Sp2
C. Sp3
D. Spd

(2) Wurtz synthesis is useful for the preparation of :
A. Higher alkene
B. Higher alkane
C. Lower alkyne
D. Lower alkene

(3) Bayer's test is used for the identification of :
A. Aldehyde
B. Ketone
C. Alkene
D. Alkane

(4) All C-C bonds in benzene have ____ lengths.
A. same
B. different
C. both A and B
D. none of these

(5)  ____ favours substitution reactions.
A. alkane
B. alkene
C. alkyne
D. none of these

(6) Which of the following gas has the slowest rate of diffusion?
A. H2
B. Cl2
C. SO2
D. CO2

(7) Oxidation number of Mn in (MnO4)^-1 is :
A. +5
B. +7
C. -1
D. +3

(8) A cell which produces electric current by redox reaction is called __ cell.
A.Voltaic
B. Electrolytic
C. Standard
D. Half

(9) A molecule of CO pocessess ____ covalent bonds.
A. 1
B. 2
C. 3
D. 4

10) The frequency of green light is 6 ✖10^24 Hertz.Its wavelength is :
A. 500nm
B. 5nm
C. 5000nm
D. 100nm