Option in green are correct
Class X
Multiple choice questions.
All questions are compulsory.
1.Emulsification of fat is
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2.State the role to determine the direction of magnetic field produced around a straight conductor carrying current
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3.What do you understand by reflection of light
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4.What is the effect of DNA copying which is not perfectly accurate on the reproduction process
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5.What happens to the temperature of water when few drops of concentrated sulphuric acid is added to it
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6.Name the excretory products other than O2 and CO2 in plants
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7.Mention how organism like bread moulds and mushrooms obtain their food
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8.What is the nature of the image formed by a concave mirror if the magnification produced by the mirror is + 3
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9.What is the scientific name of garden pea
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10.In which type of chemical reaction heat is evolved
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11.How does carbon attain noble gas configuration
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12.Why do different components of white light deviates through different angles when passing through a triangular glass prism.
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13.An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water . What is this element likely to be
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14.What is gene
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15.Between which two points related to a concave mirror should an object be placed to obtain on a screen an image twice the size of the object
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16.The sex chromosome in a girl child are
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17.Chemicals like--------- have harm the ozone layer.
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18.Dispersion of white light by a glass prism shows
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19.Which of the following is sexually transmitted disease
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20.The soil becomes ----------when its pH is more acidic than the desired value
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21.During respiration exchange of gases take place in
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22.Ohm's law states the relationship between
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23.Which of the following is not a part of the female reproductive system in human beings.
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24.Corrosion of metals can be prevented by
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25.Name the acid present in the tomato
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