Question

chemistry short quasition​

Answer 1

Step-by-step explanation:

.Which among the following qualities of iron ore is best based upon iron content?

[A] Magnetite

[B] Hematite

[C] Limonite

[D] Siderite

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Correct Answer: A [Magnetite]

Notes:

Magnetite, followed by Hematite – Limonite – Siderite

2.Which among the following elements are generally find in free state?

[A] Group 11 elements

[B] Group 12 elements

[C] Group 13 elements

[D] Group 14 elements

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3.Which among the following is the objective of the Methyl tert-butyl ether (MTBE) mixing with Petroleum?

[A] Raise Octane Number

[B] Antioxidant Stabilizer

[C] Lead Scavanger

[D] Fuel Dye

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4.Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee. What is the popular name?

[A] Thein

[B] Caffeine

[C] Theobromine

[D] Theophylline