1- What is the unit used to measure the depth of sea?
Ans -: Fathom
2- What kind of mirror is used in motor vehicles near the driver’s seat?
Ans -: Convex Mirror
3- Gas used to fill Balloons?
Ans -: Helium
4- Which is the hardest substance found in human body?
Ans -: Tooth Enamel
5- Turmeric is obtained from of a Plant.
Ans -: Stem
6- Which is the first vaccine injected into a newly born baby?
7- The process of cell division is known as –
8- The liquid metal at room temperature
9- Intake of which vitamin is recommended to improve blood coagulation?
Ans: Vitamin K
10-The species which are at the verge of the extinction
11- If a normal cell of human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be:
- Diseases that spread from one person to another are called
Ans. Communicable diseases
- Electric power is inversely proportional to
- Which of the following gases is not a Greenhouse gas?
(d) carbon dioxide
15- Oil, natural gas and coal are examples of …
Ans. Fossil fuel
- is the famous scientist who discovered gravity
Ans. Isaac Newton
Q17. Some organisms live together and share shelter and nutrient is called
Ans. symbiotic relationship