A gas turbine works on
A.Carnot cycle
B.Brayton cycle
C.Dual cycle
D.Rankine cycle
E.Regenerative cycle
Author: BILAL KHATTAK
In a vehicle the probable cause for hard steering could be
A.Low tyre pressure
B.Bent wheel spindle
C.Tie rod ends tight
D.Excessive castor
E.Any of the above
Ecosystem receives nitrogen from outside through:
A.Biological nitrogen fixation
B.Electrification of nigrogen
C.Industries
D.All the above
Which of the following is not the characteristic of social problem?
A.It results in change of existing social order.
B.It is related to consciousness.
C.It is related to dissatisfaction.
The Hormuz Strait is situated at the entrance of the
A.China Sea
B.Red Sea
C.Mediterranean Sea
D.Persian Gulf
Which one of the following is the structure concerned with photorespiration?
A.Mitochondria
B.Peroxisome
C.Ribosome
D.Lysosome
The impedance of piezo-electric crystals is
A.Negligible
B.Very low
C.Low
D.Average
E.High
Soft and heart wood are include:
A.Which are derived from gymnosperms such as pines, evergreen, needle like leaves seeds in cones
B.Hardwoods are those derived from angiosperms such as oak, ash, popular, with broad leaves seed enclosed bearing flowers
C.Wood responsible for sap conduction is termed as sap wood
D.As the wood increases in diameter, cells to the inside are block. This portion of wood is known as heart wood
E.All of the above
The importance of ecosystem lies in:
A.Cycling of materials
B.Flow of energy
C.Both (a) & (b)
D.None of the above
All plants do not possess___________??
A. Lenticels
B. Cuticle
C. Stomata
D. All of these
