BIOLOGY CH17 Animal Kingdom — Science STD 9 — Question

High concentration of antibiotics is needed for Effective action.

An object is placed at a distance of 3cm from a plane mirror. The distance of the object and image is 3cm.

Mammals have four-chambered Hearts.

State whether true or false. If false, correct the statement.

Lack of adequate fats in diet may result in low body weight

• True

• False

An electric motor converts mechanical energy into electrical energy.

Electric fuse works on the Joule heating principle.

There is more abundance of carbon in the earth

If the object is at infinity in front of a convex mirror the image is formed at infinity.

State whether true or false. If false, correct the statement.

Newlands’ periodic table is based on atomic masses of elements and modern periodic table is based on atomic number of elements.

• True

• False

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