If `4/9t h` of a bucket is filled in 1 minute, the rest of it will be filled in a. `1` min b. `9/4` min c. `5/4` min d. `4/5` min

If (4)/(9)th of a bucket is filled in 1 minute,the rest of it will be filled in a.1 min b.(9)/(4)min c(5)/(4)min d.(4)/(5)min

If 75% of a frist-order reaction is completed in 32 min, than 50% of the reaction would complete in? a. 24 min b. 16 min c. 8 min d. 4 min

A radioactive isotope decays at such a rate that after 96 min, only 1//8th of the original amount remains. The value of t_(1//2) of this nuclide is a. 12 min b. 32 min c. 24 min d. 48 min

A radioactive isotope decays at such a rate that after 96 min, only 1//8th of the original amount remains. The value of t_(1//2) of this nuclide is a. 12 min b. 32 min c. 24 min d. 48 min

In 1 minute (3)/(7) of a bucket is filled.The rest of the bucket can be filled in (7)/(3)m in utes b.(4)/(3)m in utes c.(7)/(4)m in utes d.none of these

The time required to coagulate blood is: 1. 2 min 2. 4 min 3. 6 min 4. 8 min

Two taps can fill a tank in 12 and 18 minutes respectively. Both are kept open for 2 minutes and the first is turned off. In how many minutes more will the tank be filled ? A)15 min B)20 min C)11 min D)13 min

50 mL of hydrogen diffuses out through a small hole from a vessel in 20 minutes, time needed for 40 mL of oxygen to diffuse out is: 1) 12 min 2)64 min 3)8 min 4)32 min

Two pipes. A and B. can fill a tank in X minutes and 6 minutes, respectively. If both the pipes are used together, then they take 1.5 minute To fill the tank. Find the value of X. (a)1 min (b)4 min (c)5 min (d)2 min

A cylindrical vessel of radius 0.5 m is filled with oil at the rate of 0.25 pi m^3 / minute. The rate at which the surface of the oil is rising, is (a) 1 m/min. (b) 2 m/min. (c) 5 m/min. (d) 1.25 m/min.