Related Questions

A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory . There are 100 seniors, 150 juniors and 200 sophomres who applied. Each senior's junior's name , 2 times; and each sophomres who applied. Each senior's name is placed in the lottery 3 times; each junior's name ,2 times name, 2 times ; and each sphomore's name , 1 time . What is the probability that a senior's name will be chosen?
A 18
B 38
C 48 
D 28
The average marks of a student in 10 parers are 80. If the highest and the lowest scores are not considered, the average is 81 . If his highest score is 92. find the lowest.
A 55
B 60
C 62
D None of these
Which of the following has the highest density and the lowest melting point?
A Stainless steel
B Titanium
C Lead
D Aluminium
Which planet has the lowest density?
A Earth
B Jupiter
C Saturn
D Neptune
Which of the following has the highest density and the lowest melting point ?
A Stainless steel
B Titanium
C Lead
D Aluminium
The density of hydrogen is _____ times the density of air.
A 0.07
B 1.5
C 2.5
D 3.5
Low density polythene as compared to high density polythene is
A Harder
B Tougher
C Chemically inert
D More flexible
Supercharging is the process of supplying the intake air to the engine cylinder at a density _________ the density of the surrounding atmosphere.
A Equal to
B Less than
C Greater than
D None of these
Density of high density polythene is about __________ gm/c.c.
A 1.18
B 1.05
C 0.95
D 0.99
Density of low density polythene is about __________ gm/c.c.
A 0.38
B 0.56
C 0.81
D 0.91

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