Chemistry Practice Question and Answer
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Q: The halogen used as an analgesic is-
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5fbb95d7c8a3f7269c989a24- 1Chlorinefalse
- 2Brominefalse
- 3Iodinetrue
- 4Fluorinefalse
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Answer : 3. "Iodine"
Q: Horizontal columns are called in the Periodic table.
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5f8fcd22f28f4b47be4b616c- 1Periodictrue
- 2Classfalse
- 3Electrical chemical sequencefalse
- 4Non-metalfalse
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Answer : 1. "Periodic"
Q: The basis of classification of elements in modern periodic table is based on___.
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5f8fcca5c380c466d4dcef2c- 1Atomic numbertrue
- 2Atomic massfalse
- 3Atomic volumefalse
- 4Atomic densityfalse
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Answer : 1. "Atomic number "
Q: Soda lime is a mixture of
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5f86b2978a599d39499b2f7e- 1NaOH + CaCO3false
- 2NaOH + CaOtrue
- 3NaOH + HOHfalse
- 4None of thesefalse
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Answer : 2. "NaOH + CaO"
Q: The atomic mass of an element has the maximum number of electrons in its second orbit—
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5f86a83ddcf12a01a1418fb3- 12false
- 28true
- 310false
- 416false
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Answer : 2. "8"
Q: Which of the following is not necessary for photosynthesis?
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5f86a738b7ad805e26c18d43- 1Oxygentrue
- 2Chlorophyllfalse
- 3Sunlightfalse
- 4Carbon dioxidefalse
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Answer : 1. "Oxygen "
Q: The melting point of tungsten is____.
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5f86a2598a599d39499a8013- 13,083 ° Cfalse
- 23,830 ° Cfalse
- 33,380 ° Ctrue
- 43,308 ° Cfalse
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Answer : 3. "3,380 ° C"
Q: Who proposed the word 'molecule'?
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5f869f7ce5230d6207339745- 1E. Rutherfordfalse
- 2J.J. Thomsonfalse
- 3Democritustrue
- 4John Doltonfalse
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Answer : 3. "Democritus"
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