The Fundamental Unit of Life — Science STD 9 — Question

Whichofthefollowingisatypeofcell?

The Latin language name of an element is natrium. The English name of this element is:

1. Sodium.
2. Potassium.
3. Magnesium.
4. Sulphur.

As an object falls, its ______ energy changes into ______ energy:

Four elements W, X, Y and Z contain 8, 11, 9 and 17 protons per atom respectively. The element which cannot form an anion is most likely to be:

1. W
2. X
3. Y
4. Z

An echo-sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4s after it was sent. If the speed of sound in water is 1500m/s, how deep is the shoal?

1. 150m
2. 300m
3. 600m
4. 7500m

Which one of the following is not the unit of energy?

Four students A, B, C and D find the acceleration due to gravity at the top of Ooty, Nainital, Mount Everest and Shimla. The acceleration due to gravity is the least:

Find out the wrong statement.

Intestine absorbs the digested food materials. What type of epithelial cells are responsible for that?

Symbol of ______ is taken from Greek word Kalium.