Chemistry Practice Question and Answer
8 4 Q:
5feb07d1f33a00432aff075e 4 Q:
5f029a3e7a5a806340b1064a 4 Q:
5edef8088c4c964f73d377df 4 Answer : 1. "a nonpolar molecule with polar bonds"
4 Q:
5edefcd28c4c964f73d38693 4 Q:
5ed63d274bd6e60aba33c8a4 4 Q:
5ed88dbbb516791f26501eea 4 Q:
5feb056c00e3f71b828c2206
Q: What percentage of carbon is in steel?
2668 05feb07d1f33a00432aff075e
5feb07d1f33a00432aff075e- 13%false
- 24%false
- 32%true
- 45%false
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Answer : 3. "2%"
Q: Which is known as carbolic acid?
2643 15f029a3e7a5a806340b1064a
5f029a3e7a5a806340b1064a- 1Phenoltrue
- 2Ethanolfalse
- 3Acetic acidfalse
- 4Oxalic acidfalse
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Answer : 1. "Phenol "
Q: Washing soda is the common name for
2618 15edef8088c4c964f73d377df
5edef8088c4c964f73d377df- 1Calcium carbonatefalse
- 2Sodium carbonatetrue
- 3Calcium bicarbonatefalse
- 4Sodium bicarbonatefalse
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Answer : 2. "Sodium carbonate"
Q: The carbon tetrachloride molecule (CCl4) is 2616 05b5cc604e4d2b4197774b4e7
5b5cc604e4d2b4197774b4e7- 1a nonpolar molecule with polar bondstrue
- 2a nonpolar molecule with nonpolar bondsfalse
- 3a polar molecule with polar bondsfalse
- 4a polar molecule with nonploar bondsfalse
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Answer : 1. "a nonpolar molecule with polar bonds"
Explanation :
Answer: A) a nonpolar molecule with polar bonds Explanation: The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar. When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.
Q: Permanent hardness of water may be removed by the addition of
2572 05edefcd28c4c964f73d38693
5edefcd28c4c964f73d38693- 1sodium carbonatetrue
- 2alumfalse
- 3potassium permanganatefalse
- 4limefalse
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Answer : 1. "sodium carbonate"
Q: Milk is a natural
2553 05ed63d274bd6e60aba33c8a4
5ed63d274bd6e60aba33c8a4- 1Solutionfalse
- 2Mixturefalse
- 3Suspensionfalse
- 4Emulsiontrue
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Answer : 4. "Emulsion "
Q: German silver used for making utensils is an alloy of
2519 05ed88dbbb516791f26501eea
5ed88dbbb516791f26501eea- 1copper silver nickelfalse
- 2copper zinc nickeltrue
- 3copper zinc aluminumfalse
- 4copper nickel aluminumfalse
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Answer : 2. "copper zinc nickel "
Q: Approximate pH value of lemon juice?
2461 05feb056c00e3f71b828c2206
5feb056c00e3f71b828c2206- 110false
- 22.2true
- 312false
- 414false
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Answer : 2. "2.2"
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