Chemistry Practice Question and Answer
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Q: In the nucleus of Helium,
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5fe9a17300e3f71b8285c3ff- 1four protonsfalse
- 2four neutronsfalse
- 3two neutrons and two protonstrue
- 4four protons and two electronsfalse
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Answer : 3. "two neutrons and two protons"
Q: Melting and boiling points of ionic compounds -
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61275b84b05363065a005e7a- 1contains the followingfalse
- 2are hightrue
- 3are normalfalse
- 4All the statements are truefalse
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Answer : 2. "are high"
Q: Water in case of HCl acts as a/an ___________, in case of ammonia acts as a/an ________
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63c7c8d3be373f6c9546a490- 1Base, basefalse
- 2Base, acidtrue
- 3Acid, basefalse
- 4Acid, acidfalse
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Answer : 2. "Base, acid "
Q: Which of the following is a non-metal?
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61275e1a302e8b067c99d237- 1Cobaltfalse
- 2Hydrogentrue
- 3ironfalse
- 4goldfalse
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Answer : 2. "Hydrogen"
Q: Alpha particles are ___________.
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62f33ba13342ab1184379169- 1twice the mass of beta particlesfalse
- 2negatively chargedfalse
- 3just like helium nucleitrue
- 4lower in ionizing power as compared to gamma raysfalse
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Answer : 3. "just like helium nuclei"
Q: What happens in most toothpastes to prevent tooth decay?
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5fe9a2ea04717d1a56bf8d1f- 1Bromidefalse
- 2Fluoridetrue
- 3Iodidefalse
- 4Chloridefalse
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Answer : 2. "Fluoride"
Q: Which of the following metals is available in wire form?
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61275da3302e8b067c99cde6- 1Calciumfalse
- 2Magnesiumfalse
- 3Coppertrue
- 4Leadfalse
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Answer : 3. "Copper"
Q: Which of the following is the strongest hydracid known?
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63c7c1e71c47ef334bdd967e- 1HCNfalse
- 2Hclo4true
- 3HCLfalse
- 4Hno3false
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Answer : 2. "Hclo4"
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