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Recently Added Questions
- 1If it has more electrons than protonsfalse
- 2If it has more electrons than neutronstrue
- 3If it has more protons than electronsfalse
- 4If it has more protons than neutronsfalse
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Answer : 2 If it has more electrons than neutrons
Explanation :
If an atom has more electrons than protons, it is a negative ion or anion. If it has more protons than electrons, it is a positive ion.
Which of the following elements is NOT a component of baking soda?
568 1 64bfc857a2d4dcaf044da339- 1Hydrogenfalse
- 2Calciumfalse
- 3Sodiumfalse
- 4Oxygentrue
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Answer : 4 Oxygen
Explanation :
1. Which of the following calcium elements is not a component of baking soda?
2. The chemical formula of baking soda is NaHCO3, which is composed of four elements sodium, hydrogen, carbon and oxygen.
3. Baking soda is an alkaline substance used as a leavening agent in baking.
Which law was studied in the year 1787, in which it was said that the volume of a gas increases with its absolute temperature and if its absolute temperature decreases, then its volume will decrease?
545 0 64b5204188d5e4f52dd2277b- 1Boyle’s lawfalse
- 2Dalton’s lawfalse
- 3Avogadro’s lawfalse
- 4Charles's lawtrue
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Answer : 4 Charles's law
Explanation :
1. Charles's law (also known as volume law) is an experimental gas law.
2. The volume of a gas increases with its absolute temperature and as its absolute temperature decreases its volume also decreases.
3. Charles's law was studied in the year 1787.
- 1Alcoholtrue
- 2Ethanefalse
- 3Ketonefalse
- 4Aldehydefalse
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Answer : 1 Alcohol
Explanation :
1. That class of compounds, which contain a functional group –OH, is called alcohol.
2. Alcohols contain a hydrogen atom and a hydroxyl group (-OH) along with a carbon atom.
3. The hydroxyl group is a polar group, which makes the alcohol soluble in water.
Hydrogen resembles the properties of which two groups of the periodic table?
491 0 64a2b0fac7d7c7e0674a2640- 1Group 2 and Group 17false
- 2Group 1 and Group 3false
- 3Group 1 and Group 17true
- 4Group 2 and Group 4false
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Answer : 3 Group 1 and Group 17
Explanation :
1. Hydrogen matches the properties of the first group and seventh group of the periodic table.
2. Following is some additional information about the properties of hydrogen.
- Hydrogen is a highly flammable gas.
-Hydrogen is a major component of water.
- Hydrogen can be used as fuel.
Hydrogen is used in the chemical industry to make many types of products.