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90111221. The enzyme that converts glucose to ethyl alcohol is
A
InvertaseB
MaltaseC
ZymaseD
DiastaseCorrect Answer: C. Zymase
90051222. Gunpowder consists of a mixture of
A
sand and TNTB
TNT and charcoalC
nitre, sulphur and charcoalD
sulphur, sand and charcoalCorrect Answer: C. nitre, sulphur and charcoal
90190223. Which one amongst the following is not a GreenHouse gas?
A
NitrogenB
Carbon dioxideC
Carbon MonoxideD
Chloro fluoro carbonsCorrect Answer: A. Nitrogen
90028224. Chemically 'QuickSilver' is known as
A
MercuryB
SilverC
GoldD
CopperCorrect Answer: A. Mercury
90092225. Stainless steel is an alloy of
A
chromium and carbonB
chromium, carbon and ironC
chromium and ironD
carbon and ironCorrect Answer: B. chromium, carbon and iron
90200226. Which one of the following organic compound is used to remove stains of iron compounds?
A
Oxalic acidB
Benzoic acidC
Phthalic acidD
Cinnamic acidCorrect Answer: A. Oxalic acid
90064227. Milk is a colloidal system in which:
A
Water is dispersed in fatB
Fat is dispersed in waterC
Fat and water are dispersed in each otherD
Fat is dissolvedCorrect Answer: B. Fat is dispersed in water
90192228. Which one of the following is not a radioactive element?
A
UraniumB
ThoriumC
RadiumD
CadmiumCorrect Answer: D. Cadmium
90037229. Diamonds are glittering and attractive because light incident on them undergoes
A
highest refractionB
multiple internal reflectionsC
multiple surface reflectionsD
hundred percent transmissionCorrect Answer: B. multiple internal reflections
90040230. Epsom salt is used
A
as purgativeB
in softening waterC
in the paper industryD
in making toothpasteCorrect Answer: A. as purgative
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