Chemistry Mcqs XII [300 MCQS All Chapters] Online Test 2

XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 2

Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions

Q1. Which of the following is the set of most electronegative elements?

• N,O,F
• Ca,Sr,Ba
• Na, Mg.AI
• Fe, Co, Ni

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Q2. Which of the following elements has maximum ionization potential?

• Mg
• Al
• Na
• K

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Q3. Each vertical column of the periodic table includes elements with chemical characteristics that are in general

• Non identical
• Similar
• Different
• Similar as well as different

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Q4. Each horizontal row of the periodic table includes elements with chemical characteristics

• Identical
• Similar
• Different
• Similar and different

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Q5. According to the Modern periodic law, the chemical properties of the elements are periodic functions of their

• Density
• Atomic number
• Atomic mass
• Mass number

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Q6. The 3d transitional series contains elements having atomic numbers from

• 22 to 23
• 21 to 30
• 21 to 31
• 21 to 29

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Q7. Elements in group IB, IIB through VIIB are known as

• Transition elements
• Rare earth metals
• Lanthanides
• Actinides

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Q8. The fourteen elements following lanthanum are known as.

• Lanthanones
• Lanthanides
• Rare earths
• All

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Q9. Which of the following elements have the larger radius?

• F
• Cl
• Br
• I

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Q10. Nitrogen is comparatively inert element because it has

• Stable electronic configuration
• Low atomic radius
• High electro negativity
• High dissociation energy

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