2019ScienceGS Paper I
Arrange the following substances in chronological order of their first synthesis in lab:
1. Black gold
2. Fullerene
3. Graphene
4. Kevlar
Select correct answer from the codes given below:
Select an option to check your answer
Arrange the following substances in chronological order of their first synthesis in lab:
1. Black gold
2. Fullerene
3. Graphene
4. Kevlar
Select correct answer from the codes given below:
A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by
Which of the following is NOT correctly matched?
Which of the following is an example of herbicide ?