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AAKASH INSTITUTE-SOME BASIC CONCEPTS OF CHEMISTRY -TRY YOURSELF
- Name two life saving drugs.
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- Write two challenges to chemists of future.
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- Classify the following as pure substances or mixtures, give reasons.
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- Classify the following as pure substance or mixture and given reasons.
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- Classify the following substances into element, compound and mixture. ...
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- Classify the following substances into element, compound and mixture. ...
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- Identify the following as homogeneous and heterogeneous mixtures. (...
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- Identify the following as homogeneous and heterogeneous mixtures. (...
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- Prefix zepto and femto stands for which multiples ?
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- Prefix tera and giga stands for which multiples ?
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- Define second.
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- Define kelvin.
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- Write the SI unit of thermodynamic temperature.
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- Write the SI unit of electric current.
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- Express 20^(@)C in kelvin scale.
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- Express -20^(@)C in kelvin scale.
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- Express 900.00 in scientific notation.
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- Express (2.2xx10^(4))xx(3.3xx10^(5)) in scientific notation.
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- Express (6.6xx10^(9))/(5.5xx10^(7)) in scientific notation.
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- Express (6.6xx10^(4))+(0.55xx10^(5)) in scientific notation.
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