Epiricania melanoleuca, an ectoparasitoid is effective

Which gas is most abundant in the Earth's atmosphere.

Identify the element with the electronic configuration of 2, 8, 7.

A substance X turns the colour of red litmus blue, and it will change methyl orange-

Which of the following gas is used to fill balloons.

What is the chemical name of Plaster of Paris?

Which of the following substances are ozone-depleting?

Select the correct answer from the code given below.

Which enzyme is responsible for converting complex starch into simple sugars? 

How many protons are present in the nucleus of an oxygen atom?

Which alloy is formed by mixing iron with carbon, nickel, and zinc?

Which material is commonly used for making casts and sculptures?