Q.1:- Colloidal medicines are more effective because ?
- They are cheap
- They are easy to prepare
- The germs move towards them
- They are easily assimilated and adsorbed
Q.2:- The Brownian motion is due to ?
- Temperature fluctuation within the liquid phase
- Attraction and repulsion between charges on the colloidal particles
- Impact of the molecules of the dispersion medium on the colloidal particles
- Convection currents
Q.3:- In which of the following Tyndall effect is not observed ?
- Gold Sol
- Sugar Solution
Q.4:- Colloidal solution commonly used in the treatment of eye disease is ?
- Colloidal silver
- Colloidal gold
- Colloidal antimony
- Colloidal sulphur
Q.5:- A naturally occurring substance from which a metal can be profitably extracted is called ?
Q.6:- Which of the following materials is very hard and very ductile ?
- Cast Iron
Q.7:- The use of heat treatment of ore that includes smelting and roasting is termed ?
Q.8:- The magnetic separation is used for increasing concentration of the following ?
- Horn Silver
Q.9:- Chalcopyrite is an ore of ?
Q.10:- The process of ore dressing is carried out to ?
- Add flux to the mineral
- Convert the ore to oxide
- Removal of the siliceous materials
- Remove the poisonous impurities
Q.11:- The purification of Alumina is done by ?
- Baeyer’s Process
- Hoop’s Process
- Bosch Process
- Castner Process
Q.12:- Which of the following is most malleable ?
- None of the above is malleable
Q.13:- The alum used for purifying water is ?
- Potash Alum
- Chrome Alum
- Ferric Alum
- Ammonium Alum
Q.14:- Highly pure dilute solution of sodium in liquid ammonia ?
- Exhibits electrical neutrality
- Produces sodium amide
- Produces Hydrogen gas
- Shows blue colour
Q.15:- Bauxite is concentrated by ?
- Chemical Method
- From Floatation Process
- Magnetic Separation
Q.16:- The least stable oxide at room temperature is ?
Q.17:- The percentage of gold in 21.6 carat of gold is ?
Q.18:- Which of the following is obtained, when H2S is passed through the solution of Sodium Zincate ?
Q.19:- The compounds of alkaline earth metals possess which of the following magnetic nature ?
Q.20:- Magnesium does not decompose in ?
- Hot water
- Semi hot water
- Cold water
Q.21:- Non ferromagnetic element is ?
Q.22:- Mercury is transported in metal containers made of ?
Q.23:- The second series of transition elements starts with ?
Q.24:- Oils are purified by ?
- Fractional Distillation
- Steam Distillation
- Vacuum Distillation
- Simple Distillation
Q.25:- All bonds in Benzene are equal due to ?
- Inductive Effect