MCQs

Explanation
An invertebrate is an animal without a backbone. Worms, like earthworms, are classified as invertebrates. They lack a backbone and are found in various environments.

Explanation
Chlorophyll  is a compound that is called a   Chelate.   Photosynthesis depends on the  presence of chlorophyll  for the absorption of light. There are about five closely related chlorophylls: chlorophyll a chlorophyll b chlorophyll c chlorophyll d chlorophyll e chlorophyll f

Explanation
Uranus is four times the size of the Earth. Uranus appears greenish in color because of the large amount of methane gas present in its atmosphere. ****

Explanation
Aluminum is the most abundant metal in the  Earth's crust , and the third most abundant element therein, after  oxygen  and silicon. ***

Explanation
There are   5  planets visible without a telescope, Mercury, Venus, Mars, Jupiter and Saturn.

Explanation
Earth and Moon Blue Planet  for  Earth The planet which has the  highest density  is?  Earth Number of  moons  on  Earth: 1 Which planet is known as a  watery planet ?  Earth 75% of Earth’s surface is  covered  by water **** ND5-5-2023

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0

Explanation
A deficiency of Vitamin D results in  Rickets in children and osteomalacia in adults. A deficiency of Vitamin D also causes : Bone Pain Weak Bones  Skeletal Deformities. Sunlight is a good source of Vitamin D.  Additional Information: Vitamin A   deficiency causes night blindness Vitamin C   deficiency causes scurvy   Vitamin B (B7)   deficiency causes hair fall SH10-8-2023 AGM 28.02.28 ND16112023

Explanation
In the modern periodic table, there are 7 periods (horizontal rows) and 18 groups (vertical columns).

Explanation
A reaction in which heat is absorbed is called an endothermic reaction. These reactions lower the temperature of their surrounding area, thereby creating a cooling effect.