While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements: 1

Mass of water in the beaker = 40 g

Mass of raisins before soaking = 5 g

Mass of raisins after soaking or 2 hours = 8 g

Mass of water left in the beaker after the experiment = 35 g

The percentage of water absorbed by raisins is:

After viewing different slides, a student draws following diagrams. Select the one which depicts binary fission in amoeba.

After observing the prepared slides of binary fission in amoeba and budding in following observations were reported:

(A) Single cells of amoeba and yeast were undergoing binary fission and budding respectively

(B) Cytokinesis was observed in the yeast cell.

(C) Elongated nucleus was dividing to form two daughter nuclei in amoeba.

(D) A chain of buds was observed due to reproduction in amoeba.

The correct observation(s) is/are:

How will you distinguish between a concave mirror and convex mirror in the Laboratory?

Can we test hard water by using detergent? Write one more method other than using soap to test the hardness of hard water.