GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
41. | The mobile phase in paper chromatography is usually | ||
A. | An organic liquid. | ||
B. | Sulphuric acid. | ||
C. | Water. | ||
D. | Silver nitrate. | ||
42. | The amount of heat absorbed by one mole of solid at 1 atm when it melts into liquid form is denoted by __________ | ||
A. | Δ Hv. | ||
B. | Δ Hf. | ||
C. | Δ Hi. | ||
D. | Δ Hs. | ||
43. | In synthetic fibres __________ bonding is responsible for tensile strength. | ||
A. | Nitrogen. | ||
B. | Hydrogen. | ||
C. | Oxygen. | ||
D. | None of these | ||
44. | Boiling point of HF is __________ H2O. | ||
A. | Lower than. | ||
B. | Higher than. | ||
C. | Equal to. | ||
D. | Almost same as. | ||
45. | __________ is necessary for development of leaves and it tends to accumulate in leaves and bark. | ||
A. | NO2. | ||
B. | Calcium. | ||
C. | Gypsum. | ||
D. | Nitrogen. | ||