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DUHS /
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Chap No 9 /
Quiz 1

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MDCAT Past Papers - DUHS - Chemistry - Chap No 9 Quiz

Attempt 10 MCQs on MDCAT Past Papers - DUHS - Chemistry - Chap No 9 | Quiz 1

1. Ionization energy increases along a period in the periodic table due to:

No. of positrons
Nuclear charge
No. of neutrons
No. of electrons

2. Ca(Z = 20) forms an ionic bond with Cl(Z = 17). What is the chemical formula of calcium chloride

CaCl
CaCl₂
Ca₂Cl₂
Ca₂Cl

3. Oxidation of K₂MnO₄ by Cl₂ is to manufacture:

MnO₂
KMnO₄
K₂MnO₄
Mn₂O₇

4. Heating a mixture of chromite or FeO•Cr₂O₃ and K₂CO₃ in air is to manufacture:

K₂MnO₄
KMnO₄
K₂CrO₄
K₂Cr₂O₇

5. Metallic property in a group of P-block elements has a trend:

Decreases
Increases
Remains same
Irregular trend

6. Valence shell electronic configuration of an element is 4s² 4p⁶. To which group does the element belong?

IB
IIIB
IA
IIIA

7. Superoxide of group IA has formula:

M₂O
MO₂
MO₂
M₂O₂

8. Which pair of the element markedly differ from other members of the respective groups?

Potassium and Calcium
Sodium and Magnesium
Caesium and Barium
Lithium and Beryllium

9. Why do transition elements form interstitial compounds?

Presence of unpaired electrons
High melting points
Hole present in Crystle lattice of transition element
Variable oxidation states

10. The ligand diethylene triamine is an example of:

Bidentate
Tridentate
Pentadentate
Hexadentate

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