NEET / AIIMS · Practice Sheet 18

1. 1.

   Chemistry

   How many moles are present in 29.25 g of sodium chloride (NaCl) (molar mass = 58.5 g/mol)?

   Formula:Number of Moles

   $n = \dfrac{m}{M}$

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2. 2.

   Chemistry

   Find the pressure of 5 mol of an ideal gas at 295 K in a 7 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

   Formula:Ideal Gas Law

   $PV = nRT$

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3. 3.

   Chemistry

   Find the molarity of a solution containing 0.5 mol of solute in 0.5 L of solution.

   Formula:Molarity

   $M = \dfrac{n}{V}$

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4. 4.

   Biology

   In a population at Hardy–Weinberg equilibrium, the recessive allele frequency q = 0.2. Find the dominant allele frequency p and the percentage of heterozygous carriers.

   Formula:Hardy–Weinberg Equilibrium

   $p + q = 1,\;\; 2pq = \text{carriers}$

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5. 5.

   Physics

   Calculate the potential energy of a 48 kg object at a height of 42 m (g = 9.8 m/s²).

   Formula:Gravitational Potential Energy

   $PE = mgh$

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6. 6.

   Physics

   An object starts at 2 m/s and accelerates at 8 m/s² for 10 s. Find its final velocity.

   Formula:Equation of Motion (v = u + at)

   $v = u + at$

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7. 7.

   Biology

   Under a microscope, an object of actual size 2.8 mm appears 39.2 mm. Find the magnification.

   Formula:Microscope Magnification

   $M = \dfrac{\text{image size}}{\text{actual size}}$

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8. 8.

   Physics

   A body moving at 12 m/s accelerates at 8 m/s² for 6 s. Find the distance travelled.

   Formula:Equation of Motion (s = ut + ½at²)

   $s = ut + \tfrac{1}{2}at^{2}$

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9. 9.

   Chemistry

   67 mL of a 2 M solution is diluted to 429 mL. Find the new concentration.

   Formula:Dilution

   $M_1V_1 = M_2V_2$

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10. 10.

    Biology

    In a monohybrid cross (Aa × Aa) producing 100 F₂ offspring, how many are expected to show the dominant and the recessive phenotype (3:1 ratio)?

    Formula:Monohybrid Cross (3:1)

    $\text{Dominant}:\text{Recessive} = 3:1$

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11. 11.

    Chemistry

    Find the pressure of 3 mol of an ideal gas at 226 K in a 5 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

    Formula:Ideal Gas Law

    $PV = nRT$

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12. 12.

    Physics

    Calculate the potential energy of a 16 kg object at a height of 36 m (g = 9.8 m/s²).

    Formula:Gravitational Potential Energy

    $PE = mgh$

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13. 13.

    Chemistry

    How many moles are present in 220 g of carbon dioxide (CO₂) (molar mass = 44 g/mol)?

    Formula:Number of Moles

    $n = \dfrac{m}{M}$

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14. 14.

    Physics

    An object starts at 2 m/s and accelerates at 5 m/s² for 5 s. Find its final velocity.

    Formula:Equation of Motion (v = u + at)

    $v = u + at$

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15. 15.

    Physics

    If 4,401 J of work is done in 35 s, find the power.

    Formula:Power

    $P = \dfrac{W}{t}$

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16. 16.

    Chemistry

    A solution is made by dissolving 26 g of solute in 143 g of solvent. Find the mass percentage of the solute.

    Formula:Mass Percentage

    $\%\,\text{mass} = \dfrac{\text{solute}}{\text{solution}}\times 100$

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17. 17.

    Chemistry

    Find the pressure of 5 mol of an ideal gas at 393 K in a 2 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

    Formula:Ideal Gas Law

    $PV = nRT$

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18. 18.

    Quantitative Aptitude

    A vehicle covers 432 km in 8 hours. Find its average speed.

    Formula:Speed, Distance & Time

    $\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

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19. 19.

    Physics

    Find the kinetic energy of a 18 kg object moving at 24 m/s.

    Formula:Kinetic Energy

    $KE = \tfrac{1}{2}mv^{2}$

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20. 20.

    Chemistry

    Find the molarity of a solution containing 2 mol of solute in 2 L of solution.

    Formula:Molarity

    $M = \dfrac{n}{V}$

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