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Chemistry Test ...

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  • Question 1
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    In a sample of ethyl ethanoate\(\left(\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}\right)\)the two oxygen atoms have the same number of electrons but differentnumber of neutrons. Which of the following is the correct reason for it?

  • Question 2
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    Which of the following pollutant is a component of Acid rains?

  • Question 3
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    According to VSEPR theory, the respective shapes of PCl5 and ICl5 should be

  • Question 4
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    Consider the reaction, CH3CH2CH2Br + NaCN→ CH3CH2CH2CN +NaBr.This reaction will be the fastest in:

  • Question 5
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    What is the packing fraction of \(_{26}^{56} \mathrm{Fe}\)?

    (Isotopic mass \(=55.92066\))

  • Question 6
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    The atomic number of an element is \(32\) and mass number \(55\). Calculate the number of neutrons?

  • Question 7
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    The plastic used to preserve yoghurts is replaced with a polymer called polylactic acid is an example of _______.

  • Question 8
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    Identify the product for the following reaction.

    \({CH} \equiv {CH}+{HOCl} \rightarrow\)

  • Question 9
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    Which of the following \(\mathrm{CH}_{3}-\mathrm{X}\) bond has the highest polarity?

  • Question 10
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    In Hall's process, the ore is mixed with:

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