Which of the folloiwng is used for killing rats?

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Which of the folloiwng is used for killing rats?

AZinc Phosphide

BDuralumin

CZinc Oxide

DSodium Nitrate

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Gypsum' is an ore of-

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Gypsum' is an ore of-

AIron

BCalcium

CSodium

DMagnesium

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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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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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