Related Questions

Mr. Ali decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
A 23 steps
B 16 steps
C 46 steps
D 26 steps
There are 26 steps in a shopping mall, In the time Zaman comes down two steps, Ahmed goes one step up. If they start simultaneously and keep their speed uniform, then at which step from bottom will they meet?
A 8th
B 9th
C 10th
D 11th
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
Bob just filled his car's gas tank with 20 galions of gasohol , a mixture consisting of 5% ethanol and 95% gasoline. If his car runs best on a mixture consisting of 10% ethanol and 90% gasoline, how many gallons of ethanol must he add into the gas tank for his car to achieve optimum performance?
A 20/19
B 10/9
C 9/10
D 1
When walking a certain person takes 16 complete steps in 10 seconds. At this rate, how many complete steps does the person take in 72 seconds?
A 45
B 78
C 86
D 99
For a __________ order reaction, the units of rate constant and rate of reaction are the same.
A Zero
B First
C Second
D Fractional
A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Catalytic
B Autocatalytic
C Photochemical
D None of these
The reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Biochemical
B Photochemical
C Catalytic
D Autocatalytic
The word 'steps' in the sentence - 'Necessary steps were taken in this regard' is a/an :
A Verb
B Noun
C Adjective
D Adverd
If a sprinter takes 30 steps in 9 seconds, how many steps does he take in 54 seconds?
A 130
B 170
C 173
D 180

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