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Question 1: A car travels at a constant speed of 72 km/h. How much time will it take to travel 180 km?
- A) 2.5 hours
- B) 2 hours
- C) 2.5 seconds
- D) 2 seconds
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Question 2: Which of the following statements about potential energy is correct?
- A) Potential energy is always positive.
- B) Potential energy decreases as height increases.
- C) Potential energy is the energy possessed by a body by virtue of its position.
- D) Potential energy is the same as kinetic energy.
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Question 3: A particle is moving along a straight line with a constant acceleration. The velocity-time graph of the particle will be:
- A) a straight line
- B) a parabola
- C) a hyperbola
- D) a circle
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Question 4: Which of the following is a homologous series of hydrocarbons?
- A) Methane, Ethane, Propane
- B) Propane, Butane, Pentane
- C) Methane, Ethanol, Propanol
- D) Ethane, Ethanol, Propanoic acid
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Question 5: The number of moles of oxygen in 64 g of ( O_2 ) gas is:
- A) 1 mole
- B) 2 moles
- C) 3 moles
- D) 4 moles
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Question 6: Which one of the following is a non-metal that remains liquid at room temperature?
- A) Bromine
- B) Chlorine
- C) Fluorine
- D) Iodine
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Question 7: If ( x^2 - 3x + 2 = 0 ), what are the roots of the equation?
- A) ( x = 1, 2 )
- B) ( x = -1, -2 )
- C) ( x = 1, -2 )
- D) ( x = -1, 2 )
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Question 8: The sum of the first 20 terms of an arithmetic sequence is 600, and the sum of the first 30 terms is 1500. What is the 40th term?
- A) 40
- B) 60
- C) 80
- D) 100