If a gas is in the flammable range of concentration
A.it will not explode at all
B.it will explode always without requiring heat energy
C.it will not explode unless a source of heat starts the reaction
D.none of these answers
Author: BILAL KHATTAK
The pouring of molten metal during casting should be stopped when
A.Molten metal is exhausted
B.Molten is full
C.Molten metal is seen through the riser
D.Molten metal rises in the riser
E.Molten metal flows out of the riser
The process of bringing out the lustre of metal usually by the use of cloth wheels is known as
A.Buffing
B.Burnishing
C.Finishing
D.Deburring
E.Carmetting
Which of the following is voluntary organisation?
A.Church
B.Mosque
C.Both of these
Choose the odd one:
A.Lance nematode = Pratylenchulus
B.Lesion nematode = Pratylenchulus
C.Sting nematode = Belonolaimus
D.Awl nematode = Dolichodorous
An enzyme which can convert single stranded RNA into double stranded viral DNA is called____________??
A. DNAase
B. RNAase
C. DNA polymerase
D. Reverse Transcriptase
Guidelines about gardening are:
A.Always pick flowers in the early morning or in the evening
B.Always carry cut flowers heads down to ensure their freshness for a longer period
C.If you have freshly picked flowers and want them to be preserved for a longer period plunge them in a bucket or sink of water right upto their heads
D.The flowers will remain fresh for a longer period of if you put their stems embedded inside a potato frustum
E.All of the above
In case of channels, shooting flow does not occur
A.In a channel with low gradient
B.In a horizontal channel
C.In a steep channel
D.In a trapezoidal channel
E.Directly after a hydraulic jump
Archenteron is a cavity found in which of the following stages of frog’s development:
A.Morula
B.Blastula
C.Gastrula
D.None of these
A diesel engine cannot be
A.used as prime-mover on locomotives
B.started on load
C.more efficient than a petrol engine
D.run on variable speed
