General Science-89

       1.       Which is primarily responsible of Global Warming?

a.       Green House Effect

b.      Forest Fire

c.       Dry farming

d.      Radioactivity

       2.       Why baking soda is added in the dough?

a.       To create moisture

b.      For good flavor

c.       Good color

d.      To form carbon-dioxide

       3.       Which radio isotope is used to determine the age of old articles?

a.       Hydrogen-2

b.      Carbon-14

c.       Nireogen-15

d.      Oxygen-18

        4.       Which of the following is used in fire extinguishers?

a.       Baking Soda

b.      Quick Lime

c.       Slaked Lime

d.      Both a and b

       5.       Which one of the following is used in yellow lamps used in street lights?

a.       Sodium

b.      Neon

c.       Hydrogen

d.      Nitrogen

       6.       Chemical name of common salt is:

a.       Calcium chloride

b.      Sodium Chloride

c.       Sodium Carbonate

d.      Sodium Hydrochloride

       7.       916 is for 22 Carat gold. What about 958 and 585?

a.       23 Carat and 14 Carat

b.      24 Carat and 14 Carat

c.       24 Carat and 15 Carat

d.      23 Carat and 16 Carat

       8.       The company whose chemical plant in Bhopal had a disastrous gas leak ( Methyle Isocynate) in 1984?

a.       Carbide Ltd.

b.      Union Carbide

c.       Deepak Fertilizer

d.      Saurashtra Chemical

       9.       Plaster of Paris is another name for:

a.       Bauxite

b.      Gypsum

c.       Lime Stone

d.      Chromite

       10.   Why it is difficult to see through fog?

a.       Rays of light suffer total internal reflection from the fog droplets

b.      Rays of light are scattered by the fog droplets

c.       Fog droplets absorb light

d.      The refractive index of fog is extremely high

       11.   What is the major component of airbags fitted inside the cars for driver’s safety?

a.       Sodium Bicarbonate

b.      Sodium Aziade

c.       Sodium Nitrate

d.      Sodium Peroxide

       12.   The pungent smell of garlic is because of:

a.       Chlorine

b.      Fluorine

c.       Nitrogen

d.      Sulphur

       13.   Cattle-bone powder is used as fertilizers since it is rich in:

a.       Nitrogen

b.      Chloride

c.       Sodium

d.      Phosphorous

       14.   Which of the following fuels causes minimum environmental pollution?

a.       Diesel

b.      Kerosene

c.       Hydrogen

d.      Coal

       15.   Which is a mixed fertilizer?

a.       Urea

b.      Ammonium nitrate

c.       CAN

d.      NPK

       16.   Cloudy nights are warmer than clear nights, because of:

a.       Green House Effect

b.      Terrestrial radiation

c.       Depletion of ozone layer

d.      Isolation

      17.   Cheese is an example of:

a.       Emulsion

b.      Foam

c.       Gel

d.      Sol

       18.   Which of the following is a natural polymer?

a.       PVC

b.      Urea

c.       Starch

d.      Styrene

       19.   Which among the following is hardest?

a.       Gold

b.      Iron

c.       Platinum

d.      Tungsten

       20.   Which refrigerant is used commonly in the refrigerators?

a.       Freon

b.      Iodine

c.       Hydrogen

d.      Nitrogen