Everyday Science 2137 MCQs [All-Courses]

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Color of the glow produced in the discharge tube:

A depends on the pressure in the discharge tube

B depends on the metal used as cathode

C depends on the gas used in the discharge tube

D does not depend on the nature of the gas used in the discharge tube

Review Detailed Answer

Correct Answer: depends on the gas used in the discharge tube

Covalent network crystals have_____________?

A higher melting point then molecular crystals

B lower melting point then molecular crystals

C discrete molecules linked by Van der waals forces

D hydrogen bonding

Review Detailed Answer

Correct Answer: higher melting point then molecular crystals

The increasing vapor pressure caused by heating a liquid is due to___________?

A increase inter-molecular interactions

B increasing potential energy of molecules

C increasing kinetic energy of molecules

D decreasing surface tension

Review Detailed Answer

Correct Answer: increasing kinetic energy of molecules

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

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Everyday Science 2137 MCQs [All-Courses]

All Topics 2137

All Topics 2137

Color of the glow produced in the discharge tube:

Covalent network crystals have_____________?

The increasing vapor pressure caused by heating a liquid is due to___________?

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:

Contact Info

Everyday Science 2137 MCQs [All-Courses]

All Topics 2137

All Topics 2137

Everyday Science 2136

Color of the glow produced in the discharge tube:

Covalent network crystals have_____________?

The increasing vapor pressure caused by heating a liquid is due to___________?

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: