A steel ball floats on mercury because (a) mercury does not allow any metallic ball to sink in it (b) mercury is also a metal in the liquid form (c) the density of mercury is higher than that of steel (d) a steel ball can be made to float on any liquid by suitable adjustment

A steel ball floats on mercury because (a) mercury does not allow any metallic ball to sink in it (b) mercury is also a metal in the liquid form (c) the density of mercury is higher than that of steel (d) a steel ball can be made to float on any liquid by suitable adjustment
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A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Description : A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Last Answer : b. Sink

A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury? (A) The metal piece will simply float over the mercury (B) The metal piece will be immersed in mercury by half (C) Whole of the metal piece will be immersed with its top surface just at mercury level (D) Metal piece will sink to the bottom

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Last Answer : Answer: Option C

A spherical ball made of steel when dropped in mercury container will – (1) sink in mercury (2) will be on the surface of mercury (3) will be partly immersed mercury (4) will dissolve in mercury

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On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

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Last Answer : metals are good conductors of heat

A body floats on water and also on an oil of density `1.25`. Which of the following is/are true?

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Last Answer : (B) Mercury

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because (a) Mercury is a metal (b) The density of mercury is greater than that of water (c) The cohesion of mercury is greater than its adhesion with glass (d) The cohesion of water is greater than its adhesion with glass

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Last Answer : Ans:(c)

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A fresh egg sinks in pure water but floats in salty water. This is because (a) Saline water is denser than pure water (b) Saline water is lighter than pure water (c) The viscosity of saline water is higher than that of pure water (d) The surface tension of saline water is lower than that of pure water

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Last Answer : the density of salt solution exceeds the density of eggs

Algae often float on surface of water during the day but sink down during the night due to (a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis (b) Becoming light as they consume most of their food in the night (c) Warming action of sun during the day (d) Release of absorbed air by warming of water

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Last Answer : Ans:(a)

In case of a Rotameter, the density of the float material is __________ that of the liquid it replaces. (A) More than (B) Less than (C) Equal to (D) Either (A) or (B)

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Does applesauce float or sink in water?

Description : Does applesauce float or sink in water?

Last Answer : It’s a lab question. Grab some applesauce and put it in water and see for yourself.

Why does ice float and cold water sink?

Description : Why does ice float and cold water sink?

Last Answer : Because temperature affects density. The molecular structure of the ice causes it to be less dense than liquid water, so it floats.

What determines whether a poop will float or sink?

Description : What determines whether a poop will float or sink?

Last Answer : Poop?? Or pop?

Why do good eggs sink in water and rotten eggs float ?

Description : Why do good eggs sink in water and rotten eggs float ?

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Would a basketball float or sink in the water?

Description : Would a basketball float or sink in the water?

Last Answer : yes

Can sandstone float or sink?

Description : Can sandstone float or sink?

Last Answer : Feel Free to Answer

Will a brinjal sink or float?

Description : Will a brinjal sink or float?

Last Answer : Brinjal is

Will a brinjal sink or float?

Description : Will a brinjal sink or float?

Last Answer : Brinjal is

A fresh egg when placed in salt water will – (1) sink and go to the bottom (2) sink but will not go to the bottom (3) float (4) burst

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Why does a small iron sink in water but a large ship float?

Description : Why does a small iron sink in water but a large ship float?

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Why does an iron needle float on clean water but sink when some detergent is added to this water?

Description : Why does an iron needle float on clean water but sink when some detergent is added to this water?

Last Answer : Ans: Due to surface tension, the free surface of liquid at rest behaves like a stretched membrane. When an iron needle floats on the surface of clean water, its weight is supported by the stretched ... weakened and is not able to support the weight of needle. Hence the needle sinks in such water.

Float and sink test determines the possibility of cleaning of coal by aprocess based on the(A) Gravity separation(B) Wettability(C) Particle shape(D) None of thes

Description : Float and sink test determines the possibility of cleaning of coal by aprocess based on the (A) Gravity separation (B) Wettability (C) Particle shape (D) None of thes

Last Answer : A) Gravity separation

A fresh egg when placed in salt water will (1) sink and go to the bottom (2) sink but will not go to the bottom (3) float (4) burst

Description : A fresh egg when placed in salt water will (1) sink and go to the bottom (2) sink but will not go to the bottom (3) float (4) burst

Last Answer : float

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal (A) Density of metal can't be determined (B) Metal is twice as dense as water (C) Metal will float in water (D) Metal is twice as dense as unknown fluid

Description : A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then  which is correct statement about density of metal  (A) Density of metal can't be determined  (B) ... as water  (C) Metal will float in water  (D) Metal is twice as dense as unknown fluid 

Last Answer : (A) Density of metal can't be determined 

That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Description : That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Last Answer : (3) Archimedes Principle Explanation: The floating of an iron ship in water is an example of Archimedes principle. Archimedes' principle states that an object floats on water if the weight of the water ... . Since the average density of the ship as a whole is less than the density of water.

When a solid-state component of an electronic circuit is mounted to a metallic mass, the general purpose of that mass is to ____________. A. prevent vibration damage to delicate components B. prevent mechanical damage to solid-state components C. dissipate stray magnetic currents D. act as a heat sink

Description : When a solid-state component of an electronic circuit is mounted to a metallic mass, the general purpose of that mass is to ____________. A. prevent vibration damage to delicate components B. prevent ... damage to solid-state components C. dissipate stray magnetic currents D. act as a heat sink

Last Answer : Answer: D

A shot-put is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g/cm3. -Maths 9th

Description : A shot-put is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g/cm3. -Maths 9th

Last Answer : We have, the radius of a metallic sphere (r) = 4.9 cm ∴ Volume of the sphere = 4 / 3 πr3 = 4 / 3 × 22 / 7 × 4.9 × 4.9 × 4.9 = 493.005 cm3 ∵ Density of the metal used = 7.8 g/cm3 Hence, the mass of the shot - put = 493.005 × 7.8 = 3845.44

A shot-put is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g/cm3. -Maths 9th

Description : A shot-put is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g/cm3. -Maths 9th

Last Answer : We have, the radius of a metallic sphere (r) = 4.9 cm ∴ Volume of the sphere = 4 / 3 πr3 = 4 / 3 × 22 / 7 × 4.9 × 4.9 × 4.9 = 493.005 cm3 ∵ Density of the metal used = 7.8 g/cm3 Hence, the mass of the shot - put = 493.005 × 7.8 = 3845.44

A metallic alloy in general as compared to their pure metal components is (A) More corrosion resistant (B) Having higher melting point (C) Having lower hardness, reactivity and fusibility (D) Having lower electrical conductivity

Description : A metallic alloy in general as compared to their pure metal components is (A) More corrosion resistant (B) Having higher melting point (C) Having lower hardness, reactivity and fusibility (D) Having lower electrical conductivity

Last Answer : (A) More corrosion resistant

Ice float on water because its density is (1) more than water (2) less than water (3) zero (4) same as water

Description : Ice float on water because its density is (1) more than water (2) less than water (3) zero (4) same as water

Last Answer : (2) less than water Explanation: Archimedes' Principle states that for an object to floaton water, it must displace an equal amount of water. Ice floats because it is about 9% less dense than liquid water.

Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.

Description : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.

Last Answer : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.

Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : (2) low density Explanation: The key to why clouds float is that the density of the same volume of cloud material is less than the density of the same amount of dry air. Just as oil floats on water ... it is less dense, clouds float on air because the moist air in clouds is less dense than dry air.

The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Description : The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Last Answer : (4) density Explanation: Clouds generally form, survive and grow in air that is moving upward. Rising air expands as the pressure on it decreases, and that expansion into thinner, high-altitude air causes cooling.

Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : low density