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Which statement is incorrect
- All the metals are good conductor of electricity
- All the metals are good conductor of heat
- All the metals form positive ion
- All the metals form acidic oxide
- N/A
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Answer: D Explanation: -
Which one is purely ionic compound:
AlI3
AlF3
AlBr3
All are purely covalent
AlF3 should be ionic as electronegativity difference between the two is greater than the rest.
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Answer: B Explanation: -
Mark the correct statement
- I.E OF Ca is lower than Ba
- I.E OF Ca is lower than Mg
- I.E OF Ca is higher than Be
- I.E OF Ca is lower than Sr
- IONIZATION ENERGY DECREASES FROM TOP TO BOTTOM IN GROUP
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Answer: B Explanation: -
Hydrogen acts as a reducing agent and thus resembles:
- Alkali metals
- Halogens
- Noble gases
- None of these
- N/A
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Answer: A Explanation: -
Which one is not a basic oxide:
- MgO
- CaO
- SnO2
- Na2O
- IT IS AMPHOTERIC OXIDE
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Answer: C Explanation: -
None-metals form ______ oxide:
- Amphoteric
- Acidic
- Basic
- All of these
- N/A
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Answer: B Explanation: -
Keeping in view the size of atoms, which order is the correct one:
- Lu > Ce
- Mg > Sr
- Ce > I
- Ba > Mg
- TOP TO BOTTOM IN A GROUP SIZE INCREASES
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Answer: D Explanation: -
Which of the following does not belong to alkaline earth metals?
- Be
- Mg
- Ra
- Rb
- N/A
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Answer: D Explanation: -
Which of the following does not belong to alkali metals?
- Cs
- Fr
- Na
- Ca
- N/A
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Answer: D Explanation: -
The oxides of beryllium are
- Acidic
- Neutral
- Basic
- Amphoteric
- N/A
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Answer: D Explanation: