Hello Aspirants. Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to General Science(Chemistry) !!!
- The mass of the electrons in an atom is generally regarded as
1.Significant
2.Unknown
3.Comparable to the mass of the nucleus
4.Insignificant
5.None of these
Answer & Explanation
Answer –4.Insignificant
Explanation :
The mass of the electrons in an atom is generally regarded as Insignificant because the masses of electrons are regarded as zero because they are so small.
- Foods that are acidic can be identified by their ……………. taste
1.Salty
2.Bitter
3.Sour
4.Sweet
5.None of these
Answer & Explanation
Answer – 3.Sour
Explanation :
In general Foods that are acidic can be identified by their Sour taste
- When a bee sitting …………………………….. compound it injects
1.Acetic Acid
2.Formic Acid
3.Sulphuric Acid
4.Butyric Acid
5.None of these
Answer & Explanation
Answer – 2.Formic Acid
Explanation :
Bee venom contains formic acid (also known as methanoic acid) but this is not the single active ingredient that causes the pain from a bee sitting
- The main ingredient in most antifreezes is
1.Glycerol
2.Ethanol
3.Ethylene Glycol
4.Gasoline
5.None of these
Answer & Explanation
Answer – 3.Ethylene Glycol
Explanation :
Ethylene glycol Source Ethylene glycol is the main ingredient in most antifreeze products.
- Protiens are ………………………….
1.Polysaccharides
2.Polyamines
3.Polysulfides
4.Polyamides
5.None of these
Answer & Explanation
Answer – 4.Polyamides
Explanation :
A protein is actually a polyamide .Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk.
- ………………………… is a blood agent poison
1.Nitrate
2.Cyanide
3.Nicotine
4.Sulfuric Acid
5.None of these
Answer & Explanation
Answer – 1.Nitrate
Explanation :
Thue blood agents are poisons that effectively cause the body to suffocate. Ex : Nitrate
- Which of the following is a naturally occurring polymer ?
1.Composites
2.Starch
3.Nylon
4.All of these
5.None of these
Answer & Explanation
Answer – 2.Starch
Explanation :
Naturally occurring polymers such as cotton, starch and rubber
- ………………… is a non-metal
1.Chlorine
2.Magnesium
3.Calcium
4.Calcium
5.None of these
Answer & Explanation
Answer – 1.Chlorine
Explanation :
Chlorine displaces the less electronegative Bromine and Iodine from their respective salts. Cl2 + 2 KBr ==> 2 KCl + Br2 Chlorine removes Hydrogen from the hydrides of non-metals, forming Hydrogen Chloride, and leaving the non-metal element.
- Lemon juice has sour taste. It is ………………………..
1.Basic
2.Acidic
3.Caustic
4.Neutral
5.None of these
Answer & Explanation
Answer – 2. Acidic
Explanation :
Acidic bodies are unhealthy bodies. When the body is overly acidic, it creates an unwanted environment where illness, bacteria, and yeast thrive.
- Which is not a characteristic of acids ?
1.React with bases to form Salt
2.React with active metal to form H2 gas
3.Turn litmus Red
4.Taste Bitter
5.None of these
Answer & Explanation
Answer – 1.React with bases to form Salt
Explanation :
General Characteristics of Acids:- pH < 7.
- Sour taste (though you should never use this characteristic to identify an acid in the lab)
- Reacts with a metal to form hydrogen gas.
- Increases the H+ concentration in water.
- Donates H+ ions.
- Turns blue litmus indicator red.
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