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Chemistry Fsc Part 1 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | A solution contain 10.0 g of an unknow s solute in 250 cm3 of solutin. If the molar concentration of the solutin is 0.20 mol dm-3 what is the molar mass of the scolute. |
<p>200 g mol -1</p> <p>50 g mol -1</p> <p>100 gmol -1</p> <p>400 g mol-1</p> |
| 2 | Volume of S.T.P of 22g of O2 is same as that of |
<p>2 g of hydrogen</p> <p>8.5 g of NH3</p> <p>64 g of gaseous SO2</p> <p>7 g of CO2</p> |
| 3 | A solution contains 4.0 g of sodium hydroxide in 250 cm3 of solution. What is the molar concentration of this solution |
<p>0.10 mol dm-3</p> <p>0.20 mol dm-3</p> <p>0.40 mol dm-3</p> <p>0.80 mol dm-3</p> |
| 4 | A container holds 0,5 moles of an ideal gas at STP, What is the volume of the gas in dm3 |
<p>11.2 dm3</p> <p>22.4 dm3</p> <p>44.8 dm3</p> <p>12.2 dm3</p> |
| 5 | 4.0 g of NaOH (molar mass 40 g mol-1) contains same numebr of sodium ions as are present in |
<p>5.3 g of Na2CO 3</p> <p>58.5 g of NaCl</p> <p>76 g Na2 SO4</p> <p>85 g of NaNO3</p> |
| 6 | Which of the following contains same number of particles as present in 12 g of carbon |
<p>28 f od ieon (Atomic mass of Fe= 56)</p> <p>48 g of magnesium (Atomic mass of Mg =24)</p> <p>32 g of S Molecules (Atomic mass S= 32)</p> <p>44 g of carbon dioxide (molar mass of CO2= 44)</p> |
| 7 | Which one of the followng gases will have maximum volume at STP. |
<p>88 g of N2O</p> <p>22 g of CO2</p> <p>28 g of CO</p> <p>28 g of N2</p> |
| 8 | Which one of the followng has maximum mass. |
<p>0.5 mol of N2</p> <p>0.5 Mol of NH3</p> <p>0.5 mol of He</p> <p>0.5 mol of H2</p> |
| 9 | Which one of the following Statments is incorrect |
<p>One mole of nitrogen gas contains Avogadro's numebr of moleclues</p> <p>One mole of ozone gas contains avogadr's number of molecules</p> <p>One mole of ozone contains avogadro's number of O atom</p> <p>One moleof hydrogen gas contains Avogadro's numebrof molecules</p> |
| 10 | Paramagnetic specie is. |
<p>N2</p> <p>N2<sup> -1</sup></p> <p>O2 <sup>+2</sup></p> <p>O2 <sup>-2</sup></p> |
| 11 | Highest bond order is found in |
<p>O2</p> <p>O2 <sup>-1</sup></p> <p>O2 <sup>+2</sup></p> <p>O2 <sup>+1</sup></p> |
| 12 | Which theory explain the paramagnetic behavior exhibited by O2 molecule. |
<p>Band Theory</p> <p>VBT</p> <p>MOT</p> <p>VSEPR Theory</p> |
| 13 | Which of the followng statemtn not correct regarding bounding molecular oritals. |
<p>Bonding molecular orbital posses less energy than atomic orbitals from which they are formed</p> <p>Bonnding molecular orbitals have low electron density betwene the two nuclie</p> <p>Every electron in the boundg molecular orbitals contributes to the attraction between atoms.</p> <p>Bonding molecular orbitals are formed whn the electron waves undergo constructive interference </p> |
| 14 | Which of the following will show paramagnetic property. |
<p>O2</p> <p>N2</p> <p>O 2<sup> -2</sup></p> <p>O2 <sup>+2</sup></p> |
| 15 | Which of the following hybridizations is found in ethyne. |
<p>Sp</p> <p>sp2</p> <p>sp3</p> <p>No hybridization </p> |
| 16 | What is bond angele in NF3? |
<p>102<sup>o</sup></p> <p>109.5<sup>o</sup></p> <p>104,5<sup>o</sup></p> <p>107.5<sup>o</sup></p> |
| 17 | The bond angle in ethene molecule is. |
<p>120<sup>o</sup></p> <p>180<sup>o</sup></p> <p>109<sup>o</sup></p> <p>107.5<sup>o</sup></p> |
