Which of the following alcohol is known as a wood spirit?

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Which of the following alcohol is known as a wood spirit?

AMethyl Alcohol

BEthyl Alcohol

CEthylene Glycol

DGlycerol

Akhilesh ? Apr 1 '25 at 20:39

correct answer is: option a : Methyl Alcohol
Explanation: Methyl alcohol, also known as methanol, is commonly referred to as wood spirit because it was historically produced by the destructive distillation of wood. This process involves heating wood in the absence of oxygen to break it down into various volatile compounds, including methanol. While modern production methods primarily rely on synthetic processes, the historical association with wood remains. Ethyl alcohol is grain alcohol, ethylene glycol is used as antifreeze, and glycerol is a sugar alcohol.

• Option a: Methyl Alcohol is correct because it is historically obtained from the destructive distillation of wood.
• Option b: Ethyl Alcohol, or ethanol, is commonly known as grain alcohol and is not associated with wood distillation.
• Option c: Ethylene Glycol is a diol primarily used as antifreeze.
• Option d: Glycerol, also known as glycerin, is a sugar alcohol often used in skincare and food.

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Alight sensitive compound used in photography is

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Alight sensitive compound used in photography is

ASilver chloride

BSilver sulphide

CSilver bromide

DSilver oxide

Akhilesh ? Mar 21 '25 at 21:25

correct answer is: Silver bromide
Explanation: Silver bromide is widely recognized for its high sensitivity to light, making it a key component in black and white photographic films.

• OPTION a: Silver chloride
  - Less sensitive compared to Silver bromide.
• OPTION b: Silver sulphide
  - Used in specific applications, not as common.
• OPTION c: Silver bromide
  - Most sensitive and commonly used in photography.
• OPTION d: Silver oxide
  - Less relevant in modern photography.

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The chemical name for Plaster of Paris is

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KPTCL Assistant Exam (Mescom) SLOT1 2017 click here to view all questions

The chemical name for Plaster of Paris is _________.

ACalcium Hypochlorite

BHemihydrate Cacium Sulphate

CCalcum Bicarbonate

DCalcium Carbonate

Akilesh Kharvi ? Jul 25 '2017 at 21:1

Answer is : Hemihydrate Cacium Sulphate

Explanation:

The chemical name for Plaster of Paris is Calcium Sulphate Hydrate. It’s is a quick-setting gypsum plaster consisting of a fine white powder, which hardens when moistened and allowed to dry.

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Who discovered Arsenic?

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KPTCL Assistant Exam (Mescom) SLOT1 2017 click here to view all questions

Who discovered Arsenic?

AGlenn Seaborg

BAlbert Einstein

CMarie Curie

DAlbertus Magnus

Akilesh Kharvi ? Jul 26 '2017 at 22:4

Answer is : Albertus Magnus

Explanation:

History and Uses: Although arsenic compounds were mined by the early Chinese, Greek and Egyptian civilizations, it is believed that arsenic itself was first identified by Albertus Magnus, a German alchemist, in 1250.

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What is laughing gas?

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What is laughing gas? 

ANitrogen Peroxide

BNitrous Oxide

CNitric Oxide

DNitrogen Dioxide

Nithin K ? Jul 30 '2017 at 20:11

Anwer is : Nitrous Oxide

Explanation:

Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula N 2O. At room temperature, it is a colorless non-flammable gas, with a slightly metallic scent and taste. Wikipedia

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