A) Sodium nitrate |
B) Calcium chloride |
C) Sodium carbonate |
D) Calcium sulphate |
A) Sodium nitrate |
1). What are the elements which are liquids at room temperature and standard pressure ? 1. Helium 2. Mercury 3. Chlorine 4. Bromine Select the correct answer using the code given below :
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2). Which one among the following colours has the highest wavelength ?
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3). Which one among the following is not a correct statement ?
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4). \( \Large NaOH + HCL -> NaCl + H_{2}O \) In the above chemical reaction ;
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5). Which element forms the highest number of compounds in the periodic table ?
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6). Dirty cloths containing grease and oil stains are cleaned by adding detergents to water. Stains are removed because detergent :
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7). Motion of an oscillating liquid column in a U-tube 1s :
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8). A ray of white light strikes the surface of an object. If all the colours are reflected the surface would appear:
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9). Magnetic, electrostatic and gravitational forces come under the category of
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10). Dispersion process forms spectrum due to white light falling on a prism. The light wave with, shortest wavelength :
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