GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
31. | Molecular mass of water (18 g) means: | ||
A. | Mole | ||
B. | Gram mole | ||
C. | Gram molecule | ||
D. | All of these | ||
32. | Which of the following ion formation is always exothermic: | ||
A. | Uninegative | ||
B. | Unipositive | ||
C. | Dinegative | ||
D. | Dipositive | ||
33. | The number of isotopes of elements with even mass number and even atomic number are: | ||
A. | 280 | ||
B. | 300 | ||
C. | 154 | ||
D. | 54 | ||
34. | Which one of the following is not the mono isotopic element: | ||
A. | Arsenic | ||
B. | Uranium | ||
C. | Iodine | ||
D. | Gold | ||
35. | Percentage of oxygen in calcium carbonate is: | ||
A. | 40% | ||
B. | 48% | ||
C. | 12% | ||
D. | 16% | ||