Chemistry JAMB - Page 14 of 160 - Erudites Academy

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

by Sunday | Mar 19 | Chemistry JAMB

A. Bipolar B. Negatively charged C. Positively charged D. Neutral Correct Answer: Option B – Negatively charged Explanation When these cathode rays are deflected onto an electrode of an electrometer, the instrument measured a negative charge. The rays tested...

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?

by Sunday | Mar 19 | Chemistry JAMB

A. 8.0g B. 16.0g C. 36.0g D. 72.0g Correct Answer: Option D = 72.0g Explanation 2H2 + O2 ⇒ 2H2O From the equation: 4g of Hydrogen produces 36g of water : 8g of Hydrogen will produce 72g of...

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

The chlorinated alkane often used industrially to remove grease is?

by Sunday | Mar 19 | Chemistry JAMB

A. Tetrachloromethane B. Chloromethane C. Trichloromethane D. Dichloromethane Correct Answer: Option A – Tetrachloromethane Explanation Tetrachloromethane ( carbon tetrachloride) is an effective solvent within the chemical industry and is used to clean machinery...

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

The substance often used for vulcanization of rubber is?

by Sunday | Mar 19 | Chemistry JAMB

A. Chlorine B. Hydrogen peroxide C. Sulphur D. Tetraoxosulphate(vi) acid Correct Answer: Option C – Sulphur Explanation One of the several uses of sulfur is for the vulcanization of rubber.

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be?

by Sunday | Mar 19 | Chemistry JAMB

A. Alkene B. Alkanal C. Alkanone D. Alkanoic Acid Correct Answer: Option A – Alkene Explanation alkanone & alkanal react with HCN to form compounds known as cyanohyderins. They also react with hydroxylamine to form...

When cathode rays are deflected onto the electrode of an electrometer; the instrument becomes?

Which of the following types of bonding does not involve the formation of new substances?

by Sunday | Mar 19 | Chemistry JAMB

A. Metallic B. Covalent C. Co-ordinate D. Electrovalent Correct Answer: Option A – Metallic

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