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| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 1 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 2 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 3 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 4 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 5 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 6 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 7 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 8 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 9 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 10 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 11 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 12 |
| Chemistry Mcq Questions For Class 11 Pdf Download Chapter 13 | Chemistry Mcq Questions For Class 11 Pdf Download Chapter 4 |
Chapter No 1
Basic concept
1. The mass of one mole of electron is:
- 1.008 mg
- 0.184 mg
- 0.54 mg
- 0.054 mg
2. 27 g of Al will react with how much mass of O2 to produce Al2O3 Choose which one is correct option
- 8 g of oxygen
- 16 g of oxygen
- 32 g of oxygen
- 24 g of oxygen
3. What is the number of moles of NO2 which contains 16 g of oxygen:
- 0.25
- 0.50
- 1.0
- 1.50
4. What will be the volume occupied by 2.0 g of Ne at STP:
- 2.24 dm3
- 22.4 dm3
- 1.12 dm3
- 112 cm3
5. A sample in the ionization chamber of mass spectrometer is ionized by which among the following:
- Electrons
- Proton
- Neutron
- Nucleus
6. Which one of the following pair is not iso-electronic:
- CO, N2
- Na+, Ne
- Ca, Ar
- K+, Ar
7. Which one of the following is not a molecular ion:
- N+2
- CH+4
- C6H+8
- NH+4
8. 180 g of glucose contains number of hydrogen atoms:
- 3.6 × 1023
- 6.0 × 1023
- 7.2 × 1023
- 7.2 × 1024
9. Who among the following first of all determined atomic masses of elements:
- J. Berzelius
- J.J. Thomson
- Johon Dalton
- Democritus
10. The mass of H-atom is 1.008 a.m.u. Its mass in kg should be
- 1.008 × 1.661 × 10−23 kg
- 1.008
1.661 × 10-27kg
- 1.008 × 1.661 × 10−27 kg
- 1.661 × 10−27 kg
11. The atomicity of one molecule of Haemoglobin is:
- 10,000
- 68,000
- 17,000
- 100,000
12. Formation of uninegative ion is:
- Exothermic
- Endothermic
- Both (a) & (b)
- None of these
13. Which one among of the following elements has nine isotopes:
- Ca
- Pd
- Cd
- Sn
14. Which one among of the following will form single peak in mass spectrograph:
- Iodine
- Arsenic
- Fluorine
- All of these
15. Which one of the following contains maximum no. of molecules:
- 16.0 g of CH4
- 16.0 g of O2
- 16.0 g of SO2
- 16.0 g of H2O
16. What the Atoms of all the elements always contain in nucleus called:
- Proton
- Proton and neutron
- Neutron
- Electron and neutron
17. Actual yield of a chemical reaction is always less than theoretical yield because of which among the following:
- Side reactions
- Wastage of products
- Reversible reactions
- All of these
18. Mass of sodium in 53 g of Na2CO3 is:
- 23 g
- 46 g
- 92 g
- 106 g
19. 20 moles each of Mg and O2 react to form MgO. The amount of MgO formed would be:
- 20 g
- 400 g
- 800 g
- 1600 g
20. The number of peaks obtained in mass spectrometry shows the no of which among the following:
- Charge on isotope
- Mass of isotope
- Number of isotopes
- Relative abundance of isotopes
21. What is the Molecular mass of water (18 g) means:
- Mole
- Gram mole
- Gram molecule
- All of these
22. Which one among of the following ion formation is always exothermic:
- Uninegative
- Unipositive
- Dinegative
- Dipositive
23. Which among the following the number of isotopes of elements with even mass number and even atomic number are:
- 280
- 300
- 154
- 54
24. Which among of the following is not the mono isotopic element:
- Arsenic
- Uranium
- Iodine
- Gold
25. What Percentage of oxygen in calcium carbonate is:
- 40%
- 48%
- 12%
- 16%
26. Which one of the following substances is used as CO2 absorber in combustion analysis:
- Mg(ClO4)2
- 50% KOH
- Lime water
- Dilute NaOH
27. Which one of the following properties is always in whole number:
- Atomic mass
- Atomic radius
- Atomic volume
- Atomic number
28. What is the mass of one mole of Iodine:
- 53 g
- 74 g
- 127 g
- 254 g
29. 0.5 moles of H2SO4 contains “X” moles of oxygen atoms “X” is:
- 0.5
- 1.0
- 2.0
- 4.0
30. What will weigh more:
- 2 mole N2
- 1 mole O3
- 2 mole O2
- 2 mole CO2
31. The number of electrons in one mole of H2 is:
- 6.02 × 1023
- 3.01 × 1023
- 12.04 × 1023
- Indefinite
32. CO+ is an example of which among the following:
- Free radical
- Cationic molecular ion
- Anionic molecular ion
- Stable molecule
33. Relative atomic mass is the mass of an atom of an element as compared to the mass of one atom of:
- Oxygen
- Hydrogen
- Nitrogen
- Carbon
34. Percentage of oxygen in H2O is:
- 80%
- 88.8%
- 8.8%
- 9.8%
35. Large no of isotopes are known for the elements whose masses are multiple of one among the following:
- Two
- Four
- Six
- Eight
36. The least no of molecules is present in 30 g of:
- N2O
- NO
- NO2
- N2O3
37. How many atoms of carbon are present in 18 g of glucose C6H12O6:
- 6.02 × 1022
- 3.6 × 1023
- 6.0 × 1023
- 3.6 × 1024
38. The relative atomic mass of oxygen according to C −12.000 a.m.u standard is:
- Less than 16
- More than 16
- 16 only
- No relationship
39. An organic compound contains 2% of sulphur. The molar mass of compound is:
- 200
- 800
- 1600
- 3200
40. The mass of 0.5 mole of Aluminium is:
- 13 g
- 13.5 g
- 14 g
- 27 g