151. | By whom was hydrogen discovered? |
A. charles | |
B. cavendish | |
C. priestley | |
D. boyle |
152. | Which element is called stray element in chemistry? |
A. Carbon | |
B. oxygen | |
C. nitrogen | |
D. hydrogen |
153. | Which element is the most abundant in the universe |
A. nitrogen | |
B. hydrogen | |
C. oxygen | |
D. silicone |
154. | Which of the following is called the ‘fuel of the future’? |
A. Hydrogen | |
B. methane | |
C. natural gas | |
D. ethanol |
155. | element that is an essential constituent of acids |
A. nitrogen | |
B. Hydrogen | |
C. oxygen | |
D. helium |
156. | elements having the same atomic number and atomic mass |
A. Hydrogen | |
B. lithium | |
C. oxygen | |
D. chlorine |
157. | what is the number of isotopes of hydrogen |
A. two | |
B. three | |
C. four | |
D. Five |
158. | Which of the following is not an isotope of hydrogen |
A. protium | |
B. deuterium | |
C. tritium | |
D. ozone |
159. | Which of the following is not an isotope of hydrogen |
A. protium | |
B. deuterium | |
C. tritium | |
D. ytreum |
160. | Tritium is an isotope of |
A. oxygen | |
B. Hydrogen | |
C. phosphorus | |
D. nitrogen |