521ChemistryMedium
Photographic plates are coated with a thin film of _________________?
AAgCl
MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
D. AgBr
Explanation
AgBr is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Alpha particle
Explanation
Alpha particle is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Formose
Explanation
Formose is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Shorter wavelength
Explanation
Shorter wavelength is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. To remove air bubbles from molten metal
Explanation
To remove air bubbles from molten metal is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. ethene
Explanation
ethene is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. PbS
Explanation
PbS is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. volcanoes
Explanation
volcanoes is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Ethylene bromide
Explanation
Ethylene bromide is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Substitution reactions
Explanation
enzene is much more stable than expected. The extra stability means that benzene will less readily undergo addition reactions. In benzene, the π-electrons are delocalised and makes the structure more stable. Thus, benzene does not give addition reactions because of resonance stabilisation. The more loosely held electrons are open to attack by electrophiles. Hence, the characteristic reaction of benzene is electrophilic substitution. Example: Nitration and Suphonation of Benzene. So it does not undergo Elimination reaction.