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Everyday Science 2124 MCQs [All-Courses]

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Rate of evaporation of petrol is greater than that of water at room temperature because:

A petrol molecules do not have any hydrogen bond

B petrol is an organic compound

C water molecules have small size

D petrol molecules have greater size

Review Detailed Answer

Correct Answer: petrol molecules do not have any hydrogen bond

Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to____________?

A hydrogen bonding

B irregular shape of the molecules

C irregular shape of the molecules and strong inter-molecular forces

D greater molecular size

Review Detailed Answer

Correct Answer: irregular shape of the molecules

All of the following substances are crystalline except_____________?

A Ice

B Diamond

C Sucrose

D Plastic

Review Detailed Answer

Correct Answer: Plastic

Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

A ionic substances

B metallic substances

C molecular solids

D covalent network solids

Review Detailed Answer

Correct Answer: metallic substances

Which of the following is a substance?

A Sea water

B Brass

C Tape water

D Graphite

Review Detailed Answer

Correct Answer: Graphite

An atom is_____________?

A smallest indivisible particle in an element

B smallest particle of an element which can undergo a chemical reaction

C building block of an element

D always smaller than molecule

Review Detailed Answer

Correct Answer: smallest particle of an element which can undergo a chemical reaction

All of the following statements are incorrect except:

A Precision and accuracy should go side by side in a scientific work

B Scientific work must be precise, accuracy is not essential

C Scientific work must be accurate, precision is not essential

D Calculations must be made before any experiment

Review Detailed Answer

Correct Answer: Precision and accuracy should go side by side in a scientific work

The average speed of a moving object during a given interval of time is always:

A the magnitude of its average velocity over the interval

B the distance covered during the time interval divided by the time interval

C one-half its speed at the end of the interval

D its acceleration multiplied by the time interval

Review Detailed Answer

Correct Answer: the distance covered during the time interval divided by the time interval

The SI base unit for mass is_____________?

A Gram

B Pound

C Kilogram

D Ounce

Review Detailed Answer

Correct Answer: Kilogram

Which of the following is closest to a yard in length?

A 0.01m

B 0.1m

C 1m

D 10m

Review Detailed Answer

Correct Answer: 1m

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Everyday Science 2124 MCQs [All-Courses]

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All Topics 2124

Rate of evaporation of petrol is greater than that of water at room temperature because:

Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to____________?

All of the following substances are crystalline except_____________?

Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

Which of the following is a substance?

An atom is_____________?

All of the following statements are incorrect except:

The average speed of a moving object during a given interval of time is always:

The SI base unit for mass is_____________?

Which of the following is closest to a yard in length?