Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

Wastes many be sealed in concrete-filled drums and discharged to a depth of about 500m . This specific statement is true for

Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specifice statement is ture for

The plastic tube in Fig. has a cross-sectional area of 5.00 cm^(2) . The tube is filled with water until the short arm (of length d = 0.800 m) is full. Then the short arm is figure sealed and more water is gradually poured into the long arm. When the total height of water in the long arm reaches 2.80 m, the seal is on the verging of popping. What force is then on the seal?

A photo cell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 2 m away. The true statement about the electrons emitted by the photo cathode is

Select the incorrect statement about the essential element : I. The element may not be necessary for normal growth and reproduction. II. The requirement of the element must be specific and is replaceable by another element. III. The element must be directly involved in the metabolism of the plant. IV. In the absence of the element, the plants do not complete their life cycle.

In a 500mL of 0.5M CuSO_(4) solution, during electrolysis 1.5xx10^(23) electron were passed using copper electrodes. Assume the volume of solution remains unchanged during electrolysis. Which of the following statements is // are correect? a. At the end of electrolysis, the concentration of the solution is 0.5M . b. 7.9 g of Cu is deposited on the cathode. c. 4 g of Cu is dissolved from the anode. d. 7.9 g of Cu ions are discharged.

In a 500mL of 0.5M CuSO_(4) solution, during electrolysis 1.5xx10^(23) electron were passed using copper electrodes. Assume the volume of solution remains unchanged during electrolysis. Which of the following statements is // are correect? a. At the end of electrolysis, the concentration of the solution is 0.5M . b. 7.9 g of Cu is deposited on the cathode. c. 4 g of Cu is dissolved from the anode. d. 7.9 g of Cu ions are discharged.

Two beakers of capcatity 500 mL were taken one of these beakers labelled as "A" was filled with 400 mL water whereas the beaker labelled "B" was filled with 400 mL of 2 M solution of NaCl. At the same temperature both the beakers were placed in close containers of same material and same capacity as shown in the figure given below: At a given temperature, whihc of the following statement is correct about the vapour pressure of pure water and that of NaCl solution.