1] the example of C1 chemicals are
A] formaldehyde
b] methanol
c]monoxide
d]all of these
2] which is the richest source of cellulose
A] cotton
b] wool
c] silk
d] none of these
3] importent example of polyamide class is
A] terylene
b] orlone
c] nylone 6,6
d] all of these
4] classification of fiber are
A] three types b] two types
c] five types d] one type
5] monomer of terylene is ......
A] adipic acid + ethylene glycol
b] ethylene glycol + dimethyl terephthalate
B] adipic acid + hexamethylene diamine
d] None of these
6] which one of the following is not a natural fiber?
A] cotton b] nylon
c] flax d] wool
7] yarns is made from very thin strands called
A] fibers b] loons c] silver d] none of these
8] which one of the following fiber is non biodegradable?
A] cotton b] jute c] wool d] nylon
9] asbestos is ......
A] mineral fibers b] organic fiber
c] synthetic fibers d] None of these
10] which one of the following is the right structure of etylene
A] CH2 = CH2
B] HC=CH
C] CH3-CH3
D] None of these
11] the picric acid reacts with sodium hypochlorite gives
A] tear gas b] nerve gas
c] mustard gas d] none of thse
12] COCl2 is known as
A] carbonyl dichloride b] phosgene
c] cobalt chloride d] A & B both
13] which of the following gas there is one sulfur atom is present
A] mustard gas b] nerve gas
c] tear gas d] none of these
14] picric acid is ..........
A] 2,4,6 tri nitrotoluene b] 2,4,6 tri nitro phenol
c] 2,4,6 tri nitro benzene d] 2,4,6 tri nitro napthalene
15] 2,4,6 trinitro phenyl methyl nitramine is known as
A] penryl b] hexyl c] tetryl d] RDX
16] which are the industrial explosives
A] black powder b] nitroglycerin
c] dynamite d] all of these
17] which explosives are also called as propellents
A] high explosive b] low explosive
c] primary explosive d] secondary explosive
18] explosives which are used in armed forces purpose are known as
A] industrial explosive b] low explosive
c] high explosive d] military explosive
19] in the spirit varnishes spirit is used as
A] driers b] solvent
c] plasticizers d] antiskinning agent
20] anticorrosive paints are used on
A] wall surface b] metal surface
c] interior wall surface d] exterior house surface
21] coordination of polymerization of monomer by triethyl aluminum and titanium tetrachloride
which polyethylene is formed
a] LDPE b] HDPE
c] A & B both d] none of these
22] is example of polyester fiber
A] terylene b] decron
c] nylon 6,6 d] A & B both
23] there is how many types of ionic detergent
A] 3 b] 2 c] 5 d] 1
24] the formation of which of the following polymers involves hydrolysis reaction
A] nylon-6 b] nylon-6,6
c] bakelite d] terylene
25] which one is classified as condensation polymer?
A] dacron b] teflon
c] acrylonitrile d] LDPE
26] LDPE is prepeared by
A] free radical polymerization
b] cationic polymerization
c] anionic polymerization
d] Ziegler natter polymerization
27] which is repeating unit of PVC
A] CH2=CH2
b] CH2=CCl2
c] CH2=CHCl
d] none
28] igepon-T are
A] sodium alkyl sulphonates
b] sodium alkyl aryl sulphonate
c] amide sulphonate
d] aliphatic sulphate
29] which are thermosetting polymers
A] Bakelite b] nylone 6,6
c] terylene d] PVC
30] following is repeating unit of --[-(ch2)n--O--(ch2)n--O--]n---
A] polymide b] polyester
c] polyether d] polysulphite
31] which wood is used in manufacture of match box
A] white pine b] bamboo
c] eukeliptas d] A & B both
32] chemical is used to give the striking surface in a matchbox
A] red phosphurus b] ZnO
c] resin d] antimoni trisulphide
33] soaps are based soapy detergents
A] water b] oil
c] acid d] None of these
34] the saponification of a fat or oil is done using solution for hot water process
A] KOH b] NaOH c] HCl d] NaCl
35] what is the chemical formula of P.O.P. (plaster of Paris)
A] CaSO4 • ½ H2O b] CaSO4 • 2H2O
c] CaCO3 • ½ H2O d] CaCO3 • 2H2O
36] gum paste is mainly made up of ..........
A] wheat starch b] potato starch
c] A & B both d] None of these
37] which of the following chemical is added in washing powder to keep it dry?
A] sodium silicate b] inorganic phosphate
c] carboxymethyl cellulose d] sodium perborate
38] the raw material for the match head is
A] ammonium phosphate b] potassium chlorate
c] animal blue d] none of these
39] laundry, toilet & bath soap are prepared by
A] cold process b] hot process
c] A & B both d] None of these
40] in the manufacturing of black ink which dye is used?
A] eosin b] indigo dye
c] nigrosine d] none of these
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