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Nowadays yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps?

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Important Questions on Chemistry

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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 31
German silver, an alloy, does not contain the metal
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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 32

Which of the following causes the rusting of iron?

(i) Oxidation

(ii) Reduction

(iii) Chemical reaction with oxygen

(iv) Chemical reaction with CO2

Select the correct answer using the codes given below

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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 33

Which of the following pairs is incorrect?

I. Haematite: Iron

II. Pitchblende : Copper

III. Monazite: Thorium

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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 34
Which of the following metal (shown by its symbol) is generally used for making filaments of the bulb?
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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 35
Which metal is responsible for Itai-Itai disease?
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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 36
In order to prevent it from coming in contact with oxygen, sodium metal is kept under ________.
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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 37
Which of the following when mixed with a metal forms amalgam?
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Haryana Staff Selection Commission Recruitment Exam - General Knowledge>Chapter 8 - Chemistry>Exam Pattern Questions>Q 38
What is galvanized iron?