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NEET / AIIMS · Practice Sheet 38

Sheet code: NEET-S38 · 20 questions

Name: ______________

Date: ______________

1.
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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2.
Physics
Find the electrical power when 189 V drives a current of 3 A.
Formula:Electrical Power
$P = VI$
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3.
Chemistry
A solution is made by dissolving 21 g of solute in 163 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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4.
Chemistry
How many moles are present in 90 g of water (H₂O) (molar mass = 18 g/mol)?
Formula:Number of Moles
$n = \dfrac{m}{M}$
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5.
Chemistry
A solution is made by dissolving 39 g of solute in 51 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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6.
Physics
Find the voltage across a 6 Ω resistor carrying a current of 5 A.
Formula:Ohm's Law
$V = IR$
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7.
Chemistry
81 mL of a 5 M solution is diluted to 245 mL. Find the new concentration.
Formula:Dilution
$M_1V_1 = M_2V_2$
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8.
Biology
In a population at Hardy–Weinberg equilibrium, the recessive allele frequency q = 0.1. 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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9.
Physics
Calculate the potential energy of a 21 kg object at a height of 44 m (g = 9.8 m/s²).
Formula:Gravitational Potential Energy
$PE = mgh$
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10.
Chemistry
60 mL of a 5 M solution is diluted to 395 mL. Find the new concentration.
Formula:Dilution
$M_1V_1 = M_2V_2$
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11.
Physics
Calculate the potential energy of a 35 kg object at a height of 14 m (g = 9.8 m/s²).
Formula:Gravitational Potential Energy
$PE = mgh$
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12.
Chemistry
A solution is made by dissolving 49 g of solute in 118 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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13.
Physics
An object starts at 19 m/s and accelerates at 10 m/s² for 10 s. Find its final velocity.
Formula:Equation of Motion (v = u + at)
$v = u + at$
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14.
Physics
If 4,612 J of work is done in 26 s, find the power.
Formula:Power
$P = \dfrac{W}{t}$
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15.
Biology
Under a microscope, an object of actual size 3.4 mm appears 333.2 mm. Find the magnification.
Formula:Microscope Magnification
$M = \dfrac{\text{image size}}{\text{actual size}}$
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16.
Chemistry
A solution is made by dissolving 37 g of solute in 159 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.
Physics
A constant force of 115 N moves an object 28 m in the direction of the force. Calculate the work done.
Formula:Work Done
$W = F\,d$
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18.
Physics
A body moving at 12 m/s accelerates at 2 m/s² for 2 s. Find the distance travelled.
Formula:Equation of Motion (s = ut + ½at²)
$s = ut + \tfrac{1}{2}at^{2}$
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19.
Physics
Calculate the potential energy of a 22 kg object at a height of 13 m (g = 9.8 m/s²).
Formula:Gravitational Potential Energy
$PE = mgh$
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20.
Physics
Find the density of an object with mass 495 g and volume 5 cm³.
Formula:Density
$\rho = \dfrac{m}{V}$
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