201. | The chemical formula of urea is – |
A. REMINDER | |
B. SMALL CHILDREN | |
C. SMALL CHILDREN | |
D. NH₃ |
202. | Which of the following is known as carbamide |
A. carbonate | |
B. protein | |
C. urea | |
D. glycerin |
203. | Which of the following fertilizers contains the most nitrogen |
A. urea | |
B. ammonium nitrate | |
C. potassium nitrate | |
D. ammonium phosphate |
204. | In what form is nitrogen present in urea fertilizer? |
A. nitrate | |
B. nitrite | |
C. Ammonium | |
D. amide |
205. | Nitrogen content of urea is |
A. 26%’ | |
B. 36%’ | |
C. 46%’ | |
D. 60%’ |
206. | Who was the first to synthesize urea in the laboratory |
A. williamson | |
B. Kolbe | |
C. wohler | |
D. bertholet |
207. | Who is called the father of aromatic compounds? |
A. methane | |
B. Benzene | |
C. phenol | |
D. aniline |
208. | What is the chemical name of ‘Gamaxen’? |
A. toluene | |
B. chlorobenzene | |
C. aniline | |
D. benzene hexachloride |
209. | Gammaxine is a |
A. disinfectant | |
B. fungicide | |
C. herbicide | |
D. analgesic |
210. | Benzene reacts with chlorine gas in the presence of iron catalyst to form |
A. benzene hexachloride | |
B. benzyl chloride | |
C. chlorobenzene | |
D. benzoyl chloride |