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- Question
The bonds in BaO are best described as
Options- A. covalent
- B. ionic
- C. polar
- D. non polar
- Correct Answer
- ionic
ExplanationIn the bond formation of barium with oxygen, the valency electrons from the barium transferred to the oxygen and forms an ionic bond.
- 1. What unit is used to measure weighted average atomic mass?
Options- A. amu
- B. gram/mole
- C. Both A & B
- D. 1/mole Discuss
- 2. Which of the following is a major function of chloride?
Options- A. Helps maintain gastric acidity
- B. Acts as principal intracellular electrolyte
- C. Acts as principal intracellular electrolyte
- D. All of the above Discuss
- 3. Which of the following processes is endothermic?
Options- A. Melting of ice
- B. Mixing of potassium chloride with water
- C. Photosynthesis
- D. All of the above Discuss
- 4. Is SiCl4 polar or nonpolar?
Options- A. Polar
- B. non polar
- C. Both A & B
- D. None of the above Discuss
- 5. Which of the following reactions are exothermic? 1) C + O2 ? CO22) 2Mg + O2 ? 2MgO3) CuSO4 + 5H2O ? CuSO4.5H2O4) All the above
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 6. Ultimate strength to cement is provided by
Options- A. Di-calcium silicate
- B. Tricalcium silicate
- C. Tetra calcium alumino ferrite
- D. Tri-calcium aluminate Discuss
- 7. Reactions that require CO2 take place in
Options- A. the Calvin cycle alone
- B. the light reactions alone
- C. Both A & B
- D. the chloroplast, but is not part of photosynthesis Discuss
- 8. what is the chemical name of the compound Cu2CO3
Options- A. copper (ii) carbonate
- B. copper (iii) carbonate
- C. copper (i) carbonate
- D. copper carbonate Discuss
- 9. The water molecule has a dipole with the negative portion
Options- A. localized on one of the hydrogens
- B. localized between the hydrogen atoms
- C. pointing toward the oxygen atom
- D. pointing from the oxygen through the hydrogen atoms Discuss
- 10. Which gas is a source of natural groundwater pollution?
Options- A. Helium
- B. Krypton
- C. Radon
- D. Argon Discuss
Chemistry problems
Search Results
Correct Answer: Both A & B
Explanation:
The unit which is used to measure weighted average atomic mass is Atomic Mass Unit (amu).
The amu or gram/mole can also be used for this measure.
Correct Answer: Helps maintain gastric acidity
Correct Answer: All of the above
Explanation:
The process which involves absorption of heat is endothermic.
Here given all the options are involving in absorption of heat. Hence, all the above are endithermic.
Correct Answer: non polar
Correct Answer: 4
Explanation:
Here all the given options are Exothermic reactions. Exothermic reactions are those reactions which involves the release of heat.
Generally all the combining reactions are exothermic in nature.
Correct Answer: Di-calcium silicate
Correct Answer: the Calvin cycle alone
Correct Answer: copper (i) carbonate
Explanation:
The chemical name of the compound
Copper (i) carbonate and is also called as cuprous carbonate.
Correct Answer: pointing toward the oxygen atom
Explanation:
The water molecule has a dipole with the negative portion pointing toward the oxygen atom.
Correct Answer: Radon
Explanation:
Radon gas is a source of natural groundwater pollution.
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