The mixture of gases used in a photographer’s flash tube is?
A. argon and krypton B. krypton and xenon C. helium and argon D. argon and xenon Correct Answer: Option B – krypton and xenon
The type of bonding in {Cu(NH3)4}²+ is?
A. coordinate B. electrovalent C. metallic D. covalent Correct Answer: Option A – coordinate
Which quantum number divides shells into orbitals?
A. principal B. Azimuthal C. Magnetic D. Spin Correct Answer: Option B – Azimuthal
Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays?
A. are positively charged B. are negatively charged C. have mass D. travel in straight lines Correct Answer: Option D – travel in straight linesProducts
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Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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Land Ownership Principles and Transaction Laws in Nigeria
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