Related Questions

Proper amount of entrained air in concrete results in
(i) Better workability
(ii) Better resistance to freezing and thawing
(iii) Lesser workability
(iv) Less resistance to freezing and thawing
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
Mixing Index is a ratio of the standard deviation of various products during mixing to that at zero mixing.
What is the allowed reduction of water with super plasticizers without reducing workability?
What is the EMF of a galvanic cell if the standard reduction potential of the reduction half-reaction is -0.38 volts and the standard reduction potential of the oxidation half-reaction is 0.52 volts?
Following is the data for transmission system of a Gear box reduction ratios.
1st gear - 4.3 : 1
2nd gear - 3.00 : 1
3rd gear - 2.71 : 1
4th gear - 1 : 1
Final drive reduction is 5.0 : 1
The overall reduction when the vehicle is driven in 2nd gear is
On the mixing cone, there is a screen to prevent pebbles larger than . . . . . . . . mm size from getting into shaft range with sand water mixing.
Statement : The meteorological department has issued a notification forecasting less rainfall during next year's monsoon.

Courses of Action :
I. The government should immediately set up a water authority for proper management of water resources.
II. The water supply authorities should be asked to implement reduction in regular water supply to tackle the situation.
III. The farmers should be advised to cultivate alternate crops which require less water during the coming months.
In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even ifthey seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement:
(I) The water pollutants are rising slowly and spoiling the sanctity of water.
(II) Main cause of water pollution is industrialization and lack of sustainable approach towards environment. Conclusions:
(I) Industries are mixing all the left-over slurries into the water body nearby causing immense pollution.
(II) Future generations are need to be thought about before getting involved in pollution causing activities.
The heat supplied to the gas at constant volume is (where m = Mass of gas, Cv = Specific heat at constant volume, Cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature and R = Gas constant)