| 1 |
The bond between two atoms will be ionic if the difference between their electronegativities is: |
- A. Less than 1.7
- B. Greater than 1.7
- C. Zero
- D. Less than 1.2
|
| 2 |
The no. of Ion pair/pairs in ammonia molecule is / are |
|
| 3 |
How many number of electrons take part in triple covalent bond? |
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| 4 |
Which one of the following is an electron deficient molecule?<br> |
- A. HN<sub>3</sub>
- B. BF<sub>3</sub>
- C. N<sub>2</sub>
- D. O<sub>2</sub>
|
| 5 |
H° + H° are ________________ in energy. |
- A. Lower
- B. Higher
- C. Medium
- D. Nil
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| 6 |
Atoms reacts with each other because:<br> |
- A. They are attracted to each other<br>
- B. they are short of electrons<br>
- C. they want to attain stability<br>
- D. they want to disperse<br>
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| 7 |
When an electronegative element combines electropositive element the type of bonding is<br> |
- A. covalent<br>
- B. ionic <br>
- C. polar covalent<br>
- D. coordinate covalent<br>
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| 8 |
In double covalent bond, every atom provides |
- A. 1 electrons
- B. 2 electrons
- C. 4 electrons
- D. 6 electrons
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| 9 |
PCL5 is ________________ shaped. |
- A. Bipyromidal
- B. Angular
- C. Triangular
- D. Linear
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| 10 |
________________ are formed from chemical reactions. |
- A. Elements
- B. Mixture
- C. Substance
- D. Nil
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