Chemistry Practice Question and Answer
8 Q: In 1845, which German chemist published a method for the synthesis of acetic acid, a natural product containing two carbon atoms?
1583 0649aa86b1a612ce001f66c19
649aa86b1a612ce001f66c19- 1Friedrich Wohlerfalse
- 2Marcellin Berthelotfalse
- 3Joseph Gay-Lussacfalse
- 4Hermann Kolbetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Hermann Kolbe"
Explanation :
1. In 1845, the German chemist who published a method for the synthesis of 'acetic acid', a natural product containing two carbon atoms, was Hermann Kolbe.
2. He created carbon disulfide with chlorine, and the end result was carbon tetrachloride.
Q: What do you call the drugs that bind to the receptor site and inhibit its natural function?
1581 0649a98d3c7d7c7e0672b7673
649a98d3c7d7c7e0672b7673- 1Antidepressantsfalse
- 2Agonistfalse
- 3Antagoniststrue
- 4Depressantsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Antagonists"
Explanation :
1. Name: Antagonist
2. Mechanism of action: By binding to the surface of the receptor, they cause opposition to the natural function.
Q: Food is cooked in a metal utensil because it is the source of heat.
1580 061275af7302e8b067c99af50
61275af7302e8b067c99af50- 1is a good conductortrue
- 2is a semiconductorfalse
- 3is a bad conductorfalse
- 4is both a conductor and a good conductorfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "is a good conductor"
Q: The alloy of lead and tin is called?
1577 061276441dbe92e068b9154b4
61276441dbe92e068b9154b4- 1Steelfalse
- 2metalloidsfalse
- 3Gun Matonfalse
- 4soldertrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "solder"
Q: 'Every substance in the world is made up of very fine particles.' Who said this first?
1576 05fe9a0d9755fc73bd079298a
5fe9a0d9755fc73bd079298a- 1Daltontrue
- 2Kanadfalse
- 3Rutherfordfalse
- 4Avogadrofalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Dalton"
Q: What is the basic element of all organic compounds?
1575 05f7456a94637db732832dd4c
5f7456a94637db732832dd4c- 1Nitrogenfalse
- 2Oxygenfalse
- 3Carbontrue
- 4Sulfurfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Carbon"
Q:Read the following questions carefully and answer them.
The advantage of detergents over soaps is
1571 063aaa809afa10611461dc17d
63aaa809afa10611461dc17d- 1Detergents are soluble in waterfalse
- 2Detergents could not give much latherfalse
- 3Detergents give lather even with hard watertrue
- 4Soaps give lather with only soft waterfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Detergents give lather even with hard water "
Q: Which of the following drugs is used to treat indigestion?
1568 05f697fd0397b1a52908c1074
5f697fd0397b1a52908c1074- 1Antacidtrue
- 2Antibioticfalse
- 3Analgesicfalse
- 4Antisepticfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice