NEET / AIIMS · Practice Sheet 9

1. 1.

   Chemistry

   Find the molarity of a solution containing 2.5 mol of solute in 1 L of solution.

   Formula:Molarity

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

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2. 2.

   Biology

   In a monohybrid cross (Aa × Aa) producing 20 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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3. 3.

   Physics

   Find the density of an object with mass 318 g and volume 33 cm³.

   Formula:Density

   $\rho = \dfrac{m}{V}$

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4. 4.

   Physics

   A constant force of 50 N moves an object 22 m in the direction of the force. Calculate the work done.

   Formula:Work Done

   $W = F\,d$

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5. 5.

   Physics

   A body moving at 10 m/s accelerates at 4 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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6. 6.

   Chemistry

   39 mL of a 1 M solution is diluted to 385 mL. Find the new concentration.

   Formula:Dilution

   $M_1V_1 = M_2V_2$

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7. 7.

   Chemistry

   A solution is made by dissolving 50 g of solute in 72 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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8. 8.

   Chemistry

   How many moles are present in 16 g of oxygen gas (O₂) (molar mass = 32 g/mol)?

   Formula:Number of Moles

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

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9. 9.

   Chemistry

   Find the pressure of 5 mol of an ideal gas at 217 K in a 15 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

   Formula:Ideal Gas Law

   $PV = nRT$

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10. 10.

    Physics

    Find the electrical power when 27 V drives a current of 17 A.

    Formula:Electrical Power

    $P = VI$

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11. 11.

    Chemistry

    How many moles are present in 450 g of glucose (C₆H₁₂O₆) (molar mass = 180 g/mol)?

    Formula:Number of Moles

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

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12. 12.

    Chemistry

    Find the molarity of a solution containing 1 mol of solute in 4 L of solution.

    Formula:Molarity

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

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13. 13.

    Physics

    A body moving at 1 m/s accelerates at 7 m/s² for 5 s. Find the distance travelled.

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

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

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14. 14.

    Biology

    In a population at Hardy–Weinberg equilibrium, the recessive allele frequency q = 0.5. 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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15. 15.

    Chemistry

    Find the pressure of 4 mol of an ideal gas at 379 K in a 20 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

    Formula:Ideal Gas Law

    $PV = nRT$

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16. 16.

    Chemistry

    56 mL of a 1 M solution is diluted to 136 mL. Find the new concentration.

    Formula:Dilution

    $M_1V_1 = M_2V_2$

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17. 17.

    Physics

    A constant force of 77 N moves an object 35 m in the direction of the force. Calculate the work done.

    Formula:Work Done

    $W = F\,d$

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18. 18.

    Biology

    In a monohybrid cross (Aa × Aa) producing 156 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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19. 19.

    Physics

    An object starts at 7 m/s and accelerates at 9 m/s² for 5 s. Find its final velocity.

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

    $v = u + at$

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20. 20.

    Physics

    Find the kinetic energy of a 3 kg object moving at 29 m/s.

    Formula:Kinetic Energy

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

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