Rajasthan Polytechnic Third Year Paper 2016 – Process Testing and Material Science

Rajasthan Polytechnic Third Year Paper 2016 – Process Testing and Material Science

Sources of water are
(a) rain water and sea water
(b) river water and lake water
(c) underground water
(d) all of these

Inorganic impurities in natural water are
(a) Chlorides of Ca, Mg and Na
(b) Sulphates of Ca, Mg and Na
(c) Bicarbonates of Ca, Mg
(d) All of these

Gaseous impurity in water may be
(a) CO2
(b) N2 & H2s
(c) NH3
(d) All of these

Characteristics of water which prevents lathering of soap
(a) Hardness of water
(b) Softness of water
(c) (a) & (b) both
(d) None of these

Types of hardness of water are
(a) Temporary hardness
(b) Permanent hardness
(c) (a) & (b) both
(d) None of these

Temporary hardness of water is due to
(a) Calcium carbonate
(b) Calcium sulphate
(c) Calcium bicarbonate
(d) None of these

Non- carbonate hardness of water is
(a) Temporary hardness
(b) Permanent hardness
(c) (a) & (b) both
(d) None of these

Apparatus used to measure fire point is
(a) pH meter
(b) Penetrometer
(c) both (a) & (b)
(d) P-martin’s apparatus

Factors influencing corrosion are
(a) Nature of metal
(b) Nature of corroding environment
(c) (a) & (b) both
(d) None of these

Rusting of iron is
(a) Erosion
(b) Corrosion
(c) Wearing
(d) None of these

Bomb calorimeter is used to determine calorific value of
(a) gaseous fuel
(b) liquid fuel
(c) (a) & (b) both
(d) None of these

Junker’s calorimeter is used to determine calorific value of
(a) Gaseous fuel
(b) Liquid fuel
(c) Solid fuel
(d) All of these

Which of the following analysed in proximate analysis?
(a) Moisture, volatile matter
(b) Mineral matter
(c) Fixed carbon
(d) All of these

Which analysis of coal gives constituent element namely carbon, hydrogen, nitrogen and sulphur?
(a) Proximate analysis
(b) Ultimate analysis
(c) (a) & (b) both
(d) None of these

Natural gas mainly contains
(a) Methane
(b) Ethane
(c) Propane
(d) All of these