1.Precious diamond in the world:- Kohinoor diamond.
2.Deepest trench in the world:- Mariana trench in Pacific Ocean.
3.Deepest trench Near India:- Java trench in Indian Ocean.
4.Deepest trench on land located in:- Antarctic Ice sheets.
5.Rarest metal in the world:- Rhodium.
6.Strongest metal in the world:-Tungsten. Discovered in 1781.
7.Most harmful metal in the world:-Mercury. Exposing to it causes pink disease because of inorganic salts present in it.
8.Living creature present in largest population:- Ants
9.Strongest creature in attacking(in world):-Nile river crocodile --> 5-6 metres --> Height
10.Largest insect in the world:-Mydas fly.
11.Heaviest insect in the world:-Giant Weta --> 71grams.
12.Hydrogen peroxide chemical form:-H2O2
13.Heaviest metal in world:-Osmium.
14.Lightest metal in world:-Lithium.
15.Softest metal in world:-Cesium.
16.Heaviest liquid in world:-Mercury.
17.Heaviest gas in atmosphere:-Radon.
18.Laughing gas:-N2O --> Nitrous oxide.
19.Heaviest organ in human body:-Lever.
20.Largest desert in the world:- Sahara desert --> Africa
21.Hottest desert or place in the world:- Lut desert --> Iran
22.Hottest planet in the solar system :- Venus
23.Coldest place on the Earth :- Ice plateau --> Antarctica
24.Coldest planet in the solar system :- Uranus
25.Driest desert or place in the world :- Atacama Desert --> South America
26.Preservative INS 211 :- Sodium Benzoate --> Classified as GRAS(Generally Recognized As Safe).Preservative INS 211 --> Especially used more in pickles.
27.Metal that has highest melting point :- Tungsten.
28.Metal that has lowest melting point :- Aluminium.
29.MCB fullform :- Mini Circuit Breaker.
30.Highest mountain in the world:- Mount Everest.
31.Highest mountain in India:- Kangchenjunga.
32.Lowest point in the world:- Challenger Deep The Challenger Deep is the deepest point in the earth’s crust. It is 35,827 feet deep and lies on the southern end of the Mariana Trench.
33.Lowest point in India:- Kuttnad,Kerala.
34.Longest river in the world:- Nile river.
35.Longest river in India:- Ganga River.
36.Largest river in the world:- The Amazon.
37.Largest salt lake in the world:- Chott el Djerid,South Tunisia.
38.Largest salt lake in the India:- Chilika Lake,Odisa.
39.Largest freshwater lake in the world:-Lake Tanganyika in Africa.
40.Largest freshwater lake in India:- Loktak lake,Manipur.