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- Question
The hydronium ion is
Options- A. H+
- B. HO -
- C. H2+
- D. H3O+
- Correct Answer
- H3O+
- 1. The iron ore magnetite consists of
Options- A. Fe2O3
- B. Fe3OH4
- C. FeCO3
- D. 3Fe2O3 .. 3H2O Discuss
- 2. The nuclear particles which are assumed to hold the nucleons together are
Options- A. electrons
- B. positrons
- C. neutrons
- D. mesons Discuss
- 3. The metal does not give H2 on treatment with dilute HCL is
Options- A. Zn
- B. Fe
- C. Ag
- D. Ca Discuss
- 4. The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called
Options- A. granite
- B. basalt
- C. igneous rocks
- D. sedimentary rocks Discuss
- 5. The molecule which has the highest percentage of ionic character among the following is
Options- A. HI
- B. HF
- C. HCI
- D. HBr Discuss
- 6. The mass number of an atom is equal to
Options- A. the number of protons
- B. the number of protons and electrons
- C. the number of nucleons
- D. the number of neutrons Discuss
- 7. The ore which is found in abundance in India is
Options- A. monazite
- B. fluorspar
- C. bauxite
- D. magnetite Discuss
- 8. The items amenable to detection by soft x-rays are
Options- A. contrabands
- B. lead in bullets
- C. narcotics
- D. genuine coins from counterfeit coins Discuss
- 9. The material which can be deformed permanently by heat and pressure is called a
Options- A. thermoplastic
- B. thermoset
- C. chemical compound
- D. polymer Discuss
- 10. The octane number of zero is assigned to
Options- A. 2-methyl octane
- B. n-heptane
- C. iso-octane
- D. 3-methyl octane Discuss
Chemistry problems
Search Results
Correct Answer: Fe2O3
Correct Answer: mesons
Correct Answer: Ag
Correct Answer: igneous rocks
Correct Answer: HF
Correct Answer: the number of nucleons
Correct Answer: monazite
Correct Answer: genuine coins from counterfeit coins
Correct Answer: thermoset
Correct Answer: n-heptane
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