2019Science
A sample of any of the following substances disappears after sometime when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called
GS Paper I (General Studies)
Study the subject as one continuous question paper, or narrow it to a particular year.
A sample of any of the following substances disappears after sometime when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called
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 ?
Match List - I with List - II and select the correct answer from the codes given below the lists:
| List - I | List - II |
| A. Kevlar | 1. Explosive |
| B. Taxol | 2. Synthetic fibre |
| C. Zinc Phosphide | 3. Anticancer drug |
| D. Nitrocellulose | 4. Rodenticide |
Which of the following pairs is NOT correctly matched?