General Chemistry

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196 Fertiliser having high nitrogen content is :

A
Urea
B
Ammonium sulphate
C
Ammonium nitrate
D
Calcium citrate

197 Stainless steel is an alloy of :

A
chromium and carbon
B
chromium, carbon and iron
C
chromium and iron
D
carbon and iron

198 The purest form of Iron is :

A
Cast iron
B
Steel
C
Pig iron
D
Wrought iron

199 The chief constituent of vinegar is :

A
Formic acid
B
Acetic acid
C
Salycylic acid
D
Oxalic acid

200 The material known in commerce as Terylene is a

A
Synthetic fibre
B
Natural fibre
C
Modified natural fibre
D
Blend of cotton and silk

201 Colour imparted to the Bunsen flame by strontium salt is :

A
bluish green
B
apple-green
C
brick red
D
crimson red

202 The main constituent of natural gas is :

A
Methane
B
Ethane
C
Butane
D
Propane

203 The three elements most needed in common fertilisers are :

A
Sulphur, Phosphorous and Sodium
B
Nitrogen, Potassium and Phosphorous
C
Phosphorous, Sodium and Nitrogen
D
Calcium, Phosphorous and Potassium

204 Solder is an alloy of :

A
lead, zinc
B
copper, lead
C
tin, lead
D
sodium, lead

205 An inert gas mixed with oxygen given to patients suffering from restricted breathing is :

A
Helium
B
Krypton
C
Radon
D
Argon

206 Which of the following is used to iodise common salf ?

A
Potassium iodide
B
Iodine
C
Potassium iodate
D
Sodium iodide

207 Bauxite is an alloy of which of the following metals ?

A
Aluminium
B
Silver
C
Tin
D
Iron

208 Humburger effect is otherwise known as:

A
Sodium pump
B
Anaerobic metabolism
C
Choloride shift
D
Respiratory product

209 The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

A
6
B
12
C
18
D
Zero

210 What is the most commonly used substance in fluorescent tubes?

A
Sodium oxide and argon
B
Sodium vapour and neon
C
Mercury vapour and argon
D
Mercury oxide and neon