Chemistry Most Important One Liner Question and Answer part-5
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Chemistry Most Important One Liner Question and Answer part-5
Which metals are used to make aircraft and rockets – aluminum
Graphite used in nuclear reactor is - graphite.
What is a commonly used gas in advertising sign-boards and decorative lights – Chlorine
Who discovered natural radioactivity - Henry Becquerel
Which are the most active metals- Potassium
Which element is found in all organic compounds – Carbon
What is the chemical name of common salt- sodium chloride
Which gas called Marsh gas – Methane
Which is an excellent metal – silver
Which is responsible for the effect of greenhouse gas on Earth - carbon dioxide and methane
C12H22O11 is known as- sugar
Solid iodine has a color - purplish brown to black
What happens in an oxidation reaction- There are decreases in electrons.
What are C6H6 – Benzene
What is called a cloud of dust between the stars of hydrogen, helium and other ionized gases – Nebula
Which is the first element that was chemically discovered by Hanning brand- Phosphorus
Which are the 4 major elements of amino acids - carbon, hydrogen, oxygen and nitrogen
Galvanization is a process in which a layer of zinc is applied on iron objects to protect it from - rusting.
The nucleus of a hydrogen molecule is made up of - only one proton.
Sulfur is derived from which language – Latin
The main organic acids found in grapes are - tartaric acid
Which can be used to remove permanent hardness of water - sodium carbonate
Which oxide of nitrogen is used in chloroform solution- Nitrogen peroxide
When milk turns sour, which is produced by- lactic acid
What is the common name for solution of Calcium Hydroxide – Lemonade
The major part of biogas is – Methane
What is the greenhouse gas called laughing gas - nitrous oxide
LPG leakage can be easily detected ......... by spreading in air - ethyl mercaptan
LPG is stored in a domestic gas cylinder in .......... can be made at - any stage.
Antiseptic properties in soap are found due to the mixture of- Bithionol
Which metals form a transparent metal mixture when it is mixed with a metal- mercury
Which of the metals are used in photo films- silver
Air is a mixture of - elements and compounds
The full name of CFC is – Chlorofluorocarbons
When two liquids do not dissolve in each other and do not form a solution, what is it called – immiscible
In the nucleus ....denotes atomic number- Proton
Which element, which is naturally very toxic in the traditional thermometer, was used- Mercury
What is the chemical name of chalk - calcium carbonate
What are the chemical formulas of ozone - O3
Sugar in a sugar solution is a - dissolved substance
To provide strength to rubber, to provide maximum elasticity and durability, what is the process of treatment with sulfur and heat – vulcanization
Which gas is used in refrigeration - chlorofluoro carbon
Methane is known - Marsh Gas
Important elements included in automobile exhaust are- Lead.
Silicon is used to make – microchips
Malleable shows the properties of - metal
To prevent oil settling due to oxidation at the frying of potato chips, the gas envelopes are filled with which gas – nitrogen
What is galvanized iron - zinc coated iron
Who is made of tooth enamel- calcium phosphate
Who invented the Atom Bomb- Robert Oppenhammer
The third period of the modern periodic table is the most electrically positive element, and the most negative element is - sodium, chlorine.
What is the pH value of acid rain - 5 or less
Which acid is mainly in curd- Lactic
Which is one of the states of matter that is obtained by cooling a gas of very low density under extremely low temperature - Bose Einstein Dissolved
Galvanization is a corrosion-resistant process in which a coating of ........... is used on steel and iron - zinc.
Which process is used in water purification- reverse osmosis
The minimum reactive elements of the periodic table are- excellent gases.
Which gases are used in hot air balloons- propane
What is the purity of the minimum thousandth part of sterling silver – 925
Which is used for water purification- alam
What causes the increase of carbon dioxide in the atmosphere - due to excessive use of fossil fuels, deforestation, increase in number of vehicles
Which is one of the measures to tackle global warming – Afforestation
The presence of coliform in drinking water supply is a symptom of - contamination from human waste.
In which process zinc oxide is formed, which acts as a protection and prevents corrosion – galvanization
The presence of coliform in drinking water supply is characterized by - contamination from human waste.
What is found in pure metals in the earth's crust - Platinum
Paracetamol is a - painkiller
The process of industrial production of vegetable ghee involves – reduction
Oxidation is the process in which - electrons are lost
Whose mixture does a marine diver use for breathing - oxygen and helium
What is laundry detergent - a mixture of sodium salts of high fat acids of natural sources
What is the reason for scavengers to produce foam with hard water- Calcium and magnesium salts of sulfonic acid are soluble in water.
What are the samples of air - oxygen, nitrogen, carbon dioxide, water vapor and some inert gases
Edible oils are converted into vegetable ghee by which process – hydrogenation
What are chemically diamonds - pure carbon
When two solutions are called isotonic - they have the same osmotic pressure
LPG is a mixture of - butane and propane.
How enzymes are substances- Converts complex organic molecules into ordinary substances.
Sometimes it has been observed that when we pour hot milk or water in a glass vessel, it gets cracked. What is the reason for this - boiled liquids produce more pressure.
What is the absolute zero temperature - theoretically the lowest possible temperature
The highest amount of gases in the atmosphere is - nitrogen.
The main chemical substances in animal bones and teeth are - calcium phosphate.
Gases not present in the sample of normal air are- chlorine.
Minimum amount of carbon is - in pitched iron
The acids used in batteries are - sulfuric acid.
Acids found in lemons and oranges are - citric acid.
The main compounds formed during the fermentation of sugars are - ethyl alcohol.
Where do we burn wood to make wood coal - in the absence of air
Natural rubber is added to it to make it stronger and more stable - sulfur
What is chlorination - putting a little chlorine in impure water
The gases used to create ammonia are - nitrogen and hydrogen.
The purest form of water is- tap water
Chloromycetin is – antibacterial
Chemically sugarcane sugar- sucrose
How many isotopes of hydrogen are – three
How is a saturated solution at a certain temperature- unable to dissolve more solid solutes
Acid rain is caused by – SO2 and NO2
The rusting of metal iron in air needs both – Oxygen and Moisture
A pungent smell often present near the urinals is due to – Ammonia
Which chemical substance is used for making rat poison – Potassium Cyanide
