Any undesirable change in physical, chemical or biological characteristics of natural resources like air, land, water or soil is known as pollution. All the agents that are responsible for this change are called as pollutants.
Tiwari Academy Discussion Latest Questions
(i) Carbonate and Sulphide ores are usually converted into oxides during the process of extraction of metals. (ii) Ionic compounds have generally high melting points. (iii) Hydrogen is not a metal, but it has been assigned a place in the ...
Is the following answer perfect? When a metal is attacked by substances around it, such as moisture, acids, etc, it is said to corrode and this process is called corrosion. Corrosion of iron is called rusting.
3 bag aur 4 Pan ka ek Sath mulya 257 hai aise hi 4 bag aur 3 pen ka ek Sath mulya 324 Hai is sthiti ka bijganit tatha jaymati nirupan kijiye
Ek vyakti ke purse Mein 20 paise aur 25 paise ke Sikke Hain Uske pass kul 11. 25 Hai yadi kul sikko ki sankhya 50 Hai tab es sthiti ka bijganit tatha jaymati nirupan kijiye
Pita ki Umra Uske do Putra ki Umra ke Yog Ki doguni Hai 20 varsh bad uski Umra donon Patron ki Umra ke Yog ke barabar ho jayegi is samasya ka bijganit nirupir kijiye
Ek pratiyogi Pariksha mein Ek prashn ka Sahi Uttar dene per 1 ank Milta Hai jabki Ek prashn ka galat Uttar dene par 1/2 ank Kat liya jata hai Jayanti Ne 120 prashnon ke Uttar dijiye tatha use 90 ank ...
दो वर्ष पूर्व सलीम की उम्र उसकी पुत्री की उम्र की 3 गुनी थी।6 वर्ष बाद उसकी उम्र अपनी पुत्री की उम्र के दोगुने से 4 वर्ष अधिक हो जायेगी,उनकी वर्त्तमान उम्र बताओ।तथा इसे ज्यामितीय रूप में व्यक्त करो।