Related Questions

A chemist was preparing a solution that should have included 35 milligrams of chemical . If she actually used 36.4 milligrams,what was her percentage error ( to the nearest 0.01)?
A 0.04%
B 4.00%
C 1.40%
D 3.85%
A chemist was preparing a solution that should have included 401 milligrams of chemical . If she actually used 41.8 milligrams, what was her percentage error ?
A 0.045%
B 0.45%
C 4.50%
D 3.85%
Four litres of milk are to be porued into a 2-litre bottle and a 4-litre bottle . If each bottle is to be filled to the same fraction of its capacity, how many litres of milk should be poured into the 4-litre bottle ?
A 8/3
B 7/3
C 5/2
D 2/3
Two tanks A and B are are filled with petrol. Tank A holds 600 litre more than tank B. If 100 litre of petrol were taken out from each tank A would then contain 3 times as much petrol as tank B. What is the total number of litre of fuel in the two full tanks?
A 1400
B 1200
C 1000
D 900
A car owner buys petrol at Tk. 17, Tk. 19 and Tk. 20 per litre for three consecutive years. Computer the average cost per litre, if he spends Tk. 6460 per year.
A Tk. 18.49
B Tk. 18.58
C Tk. 19.20
D Tk. 21.66
In a solution of 60 litre of suger and water, 20% is sugar. How much water (In litre) must be added to make a solution that is 8% sugar?
A 60
B 70
C 90
D None of these
বায়ুতে শব্দের বেগ 330m/sec। 1 litre হাইড্রোজেন গ্যাসে শব্দের বেগ নির্ণয় কর। (হাইড্রোজেন গ্যাসের ভর0.0896gm ও 1 litre বায়ুর ভর1.29gm)
A 1253.6 m/sec
B 12.93 m/sec
C 1.2536 m/sec
D 1253 m/sec
If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
A Total alkalinity
B Total hardness
C Total hardness total alkalinity
D Non carbonate hardness
In __________ process, ions of salts react with water to produce acidity or alkalinity.
A Hydration
B Hydrolysis
C Electrolysis
D Dialysis
A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
A True
B False

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