سالمات کی ساخت

Written by Dr. Ayesha Nadeem (Chemistry)

نویں جماعت · کیمیا · 10 سوالات

نام: ____________________ تاریخ: ____________

A bond formed by the transfer of electrons is called:
- A Covalent
- B Metallic
- C Ionic
- D Hydrogen
A bond formed by sharing of electrons is called:
- A Covalent
- B Ionic
- C Dative only
- D Electrovalent
Which of these is an ionic compound?
- A Water
- B Methane
- C Carbon dioxide
- D Sodium chloride
How many electrons are shared in the double bond of O2?
- A 6
- B 1
- C 2
- D 4
Ionic compounds usually have:
- A Gas state at room temperature
- B High melting points
- C Low melting points
- D No melting point
A compound that conducts electricity when molten is most likely:
- A A noble gas
- B Ionic
- C A non-polar liquid
- D Covalent
Water, H2O, has covalent bonds because the atoms:
- A Transfer electrons
- B Lose neutrons
- C Gain protons
- D Share electrons
The number of valence electrons in chlorine is:
- A 1
- B 8
- C 2
- D 7
Which compound has an ionic bond?
- A CO2
- B NaCl
- C H2O
- D CH4
A molecule of nitrogen, N2, has a:
- A Double bond
- B Ionic bond
- C Triple bond
- D Single bond

جوابی کلید

1. C, 2. A, 3. D, 4. D, 5. B, 6. B, 7. D, 8. D, 9. B, 10. C