WorksheetsPart-B QP chemistry Model exam
Total questions: 15
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
1. degree Clarke = 1 part of CaCO3 per _____________ parts of water.<br /> <br />
a)
10000
b)
30000
c)
50000
d)
70000
2.
2.The chemical formula of zeolite is ___________<br /> <br /> <br /> <br /> <br />
a)
FeSO4.7H2O
b)
Al2(SO4)3.18 H2O
c)
Na2O.Al2O3.xSiO2.yH2O
d)
Na2Al2O
3.
3. What is the disadvantage of using high alkaline water?<br /><br />
a)
It may lead to infections
b)
It may lead to electrolysis
c)
It may lead to caustic embrittlement
d)
It may lead to indigestion
4.
4. In case of chemical adsorption,<br /> <br />
a)
It continuously increases with increase in temperature.
b)
It continuously decreases with decrease in temperature.
c)
It increases with increase in temperature in low temperature zone than decreases.
d)
Adsorption is not affected by the temperature.
5.
5. A three way catalytic converters<br /> <br />
a)
Re-circulate exhaust gases
b)
Burns fuel vapour gases.
c)
Reduces N2 , H2O and CO2 emission levels.
d)
Removes CO. HC, and NOx from the exhaust gases passing through it.
6.
6.Which of the following statement is incorrect about the adsorption theory?<br /> <br />
a)
The catalyst is more efficient in finely divided state
b)
Action of promoters is not explained
c)
Enhanced activity of a rough surfaced catalyst is explained
d)
Specific action of catalyst is explained
7.
7. For single component system when degree of freedom is 1(one) then number of phases _______<br /><br />
a)
2
b)
3
c)
0
d)
1
8.
8. In process annealing, the steel is<br />
a)
Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
b)
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
c)
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
d)
Heated below or closes to the lower critical temperature and then cooled slowly
9.
9. Cobalt in steel<br /><br />
a)
Improves wear resistance, cutting ability and toughness
b)
Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties
c)
Improves cutting ability and reduce hardenability
d)
Gives ductility, toughness, tensile strength and anti corrosion property
10.
10. Moisture, ash content, volatile matter and fixed carbon are measured for coal as part of:<br /><br />
a)
Proximate analysis
b)
Proximate and Ultimate analysis
c)
Ultimate analysis
d)
None of the above
11.
11. Lower calorific value can be determined by equation:<br /><br />
a)
LCV = HCV – [0.09H X 587]K.cal/Kg
b)
LCV = HCV + [0.09H X 587]K.cal/Kg
c)
LCV = HCV – [0.09H /587]K.cal/Kg
d)
LCV = HCV +[0.09H /587]K.cal/Kg
12.
12. Liquid fuels are available in nature as <br /><br />
a)
Light distillate
b)
Petroleum spirit
c)
Petroleum naphtha
d)
Crude petroleum
13.
13. Which of the following may be used to measure the rate of nuclear disintegration?<br /><br />
a)
Geiger-Muller Counter
b)
Cold Chamber
c)
Cyclotron
d)
Van De Graph Generator
14.
14. Thermal conversion involves the absorption of thermal energy in the form of <br /><br />
a)
UV radiation
b)
Microwave radiation
c)
IR radiation
d)
none of the above
15.
15. Identify a secondary battery from the following<br /><br />
a)
Dry cell
b)
Lead acid battery
c)
H2-O2 fuel cell
d)
None of the above
100 %
