Science Practice Quiz 161

Q1.Light coloured clothes are preferred during which season?

A. Winter B. Autumn C. Summer D. Spring

Q2.In places with a hot climate, what colour are the outer walls of houses advised to be painted?

A. Black B. Red C. White D. Blue

Q3.One litre of water at 30°C is mixed with one litre of water at 50°C. What will be the temperature of the mixture?

A. 80°C B. More than 50°C but less than 80°C C. 20°C D. Between 30°C and 50°C

Q4.An iron ball at 40°C is dropped into a mug containing water also at 40°C. Which of the following statements regarding heat flow is correct?

A. Heat will flow from the iron ball to the water. B. Heat will flow from the water to the iron ball. C. Heat will not flow between the iron ball and the water. D. The temperature of both the iron ball and water will increase.

Q5.When a wooden spoon is dipped into a cup of ice cream, what happens to its other end?

A. It becomes cold due to conduction. B. It becomes cold due to convection. C. It becomes cold due to radiation. D. It does not become cold.

Q6.Stainless steel pans are often manufactured with copper bottoms. What is the primary reason for this design choice?

A. Copper bottoms make the pan more durable. B. Pans with copper bottoms appear more colourful. C. Copper is a superior conductor of heat compared to stainless steel. D. Copper is easier to clean than stainless steel.

Q7.As per the provided text, what is the role of a veterinary doctor?

A. A doctor who treats human patients. B. A doctor who specializes in dental care. C. A doctor who treats animals. D. A doctor who conducts medical research.

Q8.Based on the practice of providing stainless steel pans with copper bottoms, what can be inferred about the heat conductivity of these materials?

A. Stainless steel is a better conductor of heat than copper. B. Copper and stainless steel have similar heat conductivity. C. Copper is a better conductor of heat than stainless steel. D. Both copper and stainless steel are poor conductors of heat.

Q9.Considering that the other end of a wooden spoon dipped in ice cream does not become cold, what property of wood can be inferred regarding heat transfer?

A. Wood is an excellent conductor of heat. B. Wood is a good insulator (poor conductor) of heat. C. Wood transfers heat primarily through convection. D. Wood transfers heat primarily through radiation.

Q10.Who devised the Celsius scale?

A. Anders Celsius B. Daniel Gabriel Fahrenheit C. Lord Kelvin D. Isaac Newton

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Science Practice Quiz 161