Multiple Choice QuestionsDiabetic patients are advised a low glycaemic index diet. The reason for this is:
They requires less carbohydrate than healthy individuals
They cannot assimilate ordinary carbohydrates
They need to have slow, but sustained release of glucose in their blood stream.
They can tolerate lower, but not higher than normal blood sugar level.
The reason for the hardness of diamond is
Extended covalent bonding
Layered structure
Formation of cage structure
Formation of tubular structure
Which of the following particles has the largest range in a given medium if their initial energies are the same?
Alpha
Gamma
Positron
Electron
Lassaigne's test is employed to detect the presence of nitrogen, sulphur, halogens and phosphorus in an organic compound. These elements are present in the covalent form in an organic compound. On treatment with sodium metal covalent carbon of organic compound are converted into which ionic forms:
Cyanide
Suphide
Nitrate
Carbide
Zinc oxide is thermochromic, changing from white to yellow when heated to high temperature. This colour change is caused due to :
Stoichiometric property of metal
Non-stoichiometric property of metal
Burning of oxygen
Fluorescence at high temperature
If the handle of a door placed at hinges is displaced toward center, more force is required to open it because:
Less moment of force
More moment of force
Force will be zero
Centre of gravity is zero
If a gas is released from pressurized bottle, then which statement will be true for release gas ?
It will gain energy
It will have same temperature as in bottle
It will gain temperature
It will cool as compare to gas in container
NaCl has ionic bond because
Both Na and Cl has same number of valence electron
Both Na and Cl belongs to same group
Na loses one elctron and chlorine receives one electron
Due to difference in their electronegativity
Brown ring test is confirmatory test for which anionic species?
Nitrate
Bromide
Chloride
Fluoride
