A:-humidity
B:-low pressure
C:-temperature fall of atmosphere
D:-all of the above
Correct Answer:- Option-C
Question78:-Velocity head is given by :
கவ
8;-/2/20
629
:-೪2/202
Correct Answer:- Option-B
Question79:-Inclined single column manometer is useful in the ۱۵85۱۷ ۲۵۴۵(۲ ‏...آ0‎ | pressure.
കണ്ണി
B:-medium
C:-high
D:-negative
Correct Answer:- Option-A
Question80:-To separate entrained liquid or solid in gas flow, we use a ടട
A:-steam trap
B:-strainer
C:-drip leg
D:-open drain
Correct Answer:- Option-C
Question81:-One kilogram of water contains 4g of NaoH .The concentration of the solution is expressed 85:
A:-0.1molal
B:-0.1molar
C:-Decinormal
D:-0.5 Normal
Correct Answer:- Option-A
Question82:-The first use of quantum theory to explain the structure of atom was made by:
A:-Heisenberg
B:-Bohr
C:-Planck
D:-Einstein
Correct Answer:- Option-B
Question83:-Which of the following relates to photon both as wave motion and as stream of particles?
A:-Interference

Correct Answer:- Option-D
QuestionB4:-A larger increase in reaction rate with small rise in temperature is due to:
A:-increase in number of activated molecules
B:-increase in number of collisions
C:-lowering of activation energy
D:-shortening of mean free path
Correct Answer:- Option-A
Question85:-The function of gypsum is to:
A:-start the setting of cement
B:-stop the hydration of cement
C:-retard the easily initial setting of the cement
D:-give the colour of the cement
Correct Answer:- Option-C
Question86:-If the temperature remains constant, the volume of a given mass of gas is inversely proportional to its
pressure.this statement is known as:
A:-Boyle's law
B:-Charle’s law
C:-Gay-Lussac law
D:-Joule’s law