Related Questions

At a Luncheon table where 20 men are seated, one -half of then men belong to club A, one -fourth belong to club B and one-tenth to both clubs , how many men belong to neither?
A 3
B 5
C 7
D 6
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an
A Insulator
B Conductor
C Solid semi-conductor
D Liquid semi-conductor
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as
A Matthiessen’s rule
B Debye rule
C Curie rule
D Onne’s rule
Govt. Laboratory High School has 10 members in its chess team and 14 members in its science club. Five students at the school belong to both the chess team and the science club. How many students belong to only the chess team?
A 5
B 6
C 7
D 9
The ratio of boys to girls in class A is 3 to 4 . The ratio of boys to girls in class B is 4 to 5 . If the two classes were combined, the ratio of boys to girls in class B is two less than the number of girls in class A. How many girls are in class A?
A 87
B 11
C 12
D 15
Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?
A 81
B 81.5
C 82
D 84.5
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?
A Pore diffusion
B Film diffusion
C Ash layer diffusion
D Chemical reaction
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
A Film
B Ash layer
C Pore
D None of these
For heating element high resistivity material is chosen to
A Reduce the length of heating element
B Increase the life of the heating element
C Reduce the effect of oxidation
D Produce large amount of heat
High resistivity materials are used in
A Precision instruments
B Heating elements
C Motor starters
D Incandescent lamps
E All of the above

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