(2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. A well-known but minor use is as a lifting gas in balloons and airships

(2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. A well-known but minor use is as a lifting gas in balloons and airships
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Ammonial is a mixture of – (1) aluminium powder and ammonium nitrate (2) aluminium powder and ammonium chloride (3) aluminium powder and ammonium sulphate (4) aluminium powder and potassium nitrate
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Helium gas is used in gas balloons instead of hydrogen gas because it is (1) lighter than hydrogen (2) more abundant than hydrogen (3) non-combustible (4) more stable

Description : Helium gas is used in gas balloons instead of hydrogen gas because it is (1) lighter than hydrogen (2) more abundant than hydrogen (3) non-combustible (4) more stable 

Last Answer : non-combustible

Which gas is commonly used in balloons and airships? A. Hydrogen B. Helium C. Carbon D. Hydrogen Sulphide

Description : Which gas is commonly used in balloons and airships? A. Hydrogen B. Helium C. Carbon D. Hydrogen Sulphide

Last Answer : ANSWER: B

25 Which gas is commonly used in balloons and airships? A. Hydrogen B. Helium C. Carbon D. Hydrogen Sulphide

Description : 25 Which gas is commonly used in balloons and airships? A. Hydrogen B. Helium C. Carbon D. Hydrogen Sulphide

Last Answer : ANSWER: B

Which gas is commonly used in balloons and airships?

Description : Which gas is commonly used in balloons and airships?

Last Answer : Helium

When petroleum is refined it is subject to a number of processes including cracking. During the cracking process w) lighter hydrocarbons are combined to form heavier ones x) heavy hydrocarbons are broken up into lighter ones y) lighter hydrocarbons are separated by distillation z) oxygen is used to burn the heavier hydrocarbons

Description : When petroleum is refined it is subject to a number of processes including cracking. During the cracking process w) lighter hydrocarbons are combined to form heavier ones x) heavy hydrocarbons ... lighter hydrocarbons are separated by distillation z) oxygen is used to burn the heavier hydrocarbons

Last Answer : ANSWER: X -- HEAVY HYDROCARBONS ARE BROKEN UP INTO LIGHTER ONES

You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weight the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light -Riddles

Description : You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables ... than the others. You are asked to both identify it and determine whether it is heavy or light -Riddles

Last Answer : Most people seem to think that the thing to do is weight six coins against six coins, but if you think about it, this would yield you no information concerning the whereabouts of the only different coin. ... . The heavier one is the different coin. If they balance, then 2 is a different light coin.

The gas used for filling weather balloons is – (1) helium (2) hydrogen (3) air (4) nitrogen

Description : The gas used for filling weather balloons is – (1) helium (2) hydrogen (3) air (4) nitrogen

Last Answer : (1) helium Explanation: A balloon is an inflatable flexible bag filled with a gas, such as helium, hydrogen, nitrous oxide, oxygen, or air. Modern balloons can be made from ... others are used for practical purposes such as meteorology, medical treatment, military defense, or transportation.

The gas used for filling weather balloons is (1) helium (2) hydrogen (3) air (4) nitrogen

Description : The gas used for filling weather balloons is (1) helium (2) hydrogen (3) air (4) nitrogen

Last Answer : helium

Pick out the wrong statement. (A) The nucleus of a hydrogen atom is identical with a proton (B) A, β-ray particle is identical with an electron (C) Mass of an electron is about 1/1800th of the lightest nucleus (D) Positron is heavier than a proton

Description : Pick out the wrong statement. (A) The nucleus of a hydrogen atom is identical with a proton (B) A, β-ray particle is identical with an electron (C) Mass of an electron is about 1/1800th of the lightest nucleus (D) Positron is heavier than a proton

Last Answer : (D) Positron is heavier than a proton

In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen

Description : In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen

Last Answer : (1) Helium Explanation: The Sun is composed primarily of the chemical elements hydrogen and helium; they account for 74.9% and 23.8% of the mass of the Sun in the photosphere, respectively. All ... out of which it formed: the hydrogen and helium in the Sun were produced by Big Bang nucleosynthesis.

In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Description : In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Last Answer : Helium

LPG when brought to atmospheric pressure & temperature will be a (A) Liquid lighter than water (B) Liquid heavier than water (C) Gas lighter than air (D) Gas heavier than air

Description : LPG when brought to atmospheric pressure & temperature will be a (A) Liquid lighter than water (B) Liquid heavier than water (C) Gas lighter than air (D) Gas heavier than air

Last Answer : (D) Gas heavier than air

Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas

Description : Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas

Last Answer : it is lighter than air

Name the gas which is used in balloons in the place of hydrogen? (1) nitrogen (2) helium (3) neorn (4) argon

Description : Name the gas which is used in balloons in the place of hydrogen? (1) nitrogen (2) helium (3) neorn (4) argon

Last Answer : (2) helium Explanation: Helium is used in balloons in the place of hydrogen. This is because hydrogen is a combustible gas and when burst can cause skin burns.

The second most abundant element in the universe?

Description : The second most abundant element in the universe?

Last Answer : Helium

Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Description : Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Last Answer : (3) Both will reach the same height Explanation: Galileo's experiment showed that if two bodies of unequal masses are dropped from the same height, the time required by them to reach the ground are equal ... reach the ground is equal to unity. This means that both of them will reach the same height.

Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Description : Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Last Answer : Both will reach the same height

In preference to nitrogen -oxygen mixture (present in air), a helium -oxygen mixture is used by divers in deep sea because helium (a) is less toxic than nitrogen (b) can readily mix with oxygen than nitrogen (c) is lighter than nitrogen (d) is less soluble in blood than nitrogen at high pressure under the sea

Description : In preference to nitrogen -oxygen mixture (present in air), a helium -oxygen mixture is used by divers in deep sea because helium (a) is less toxic than nitrogen (b) can readily mix with oxygen ... ) is lighter than nitrogen (d) is less soluble in blood than nitrogen at high pressure under the sea

Last Answer : Ans:(d)

Warm air is ___________than cold air a) Heavier b) Lighter c) No difference in weight d) Very much lighter

Description : Warm air is ___________than cold air a) Heavier b) Lighter c) No difference in weight d) Very much lighter

Last Answer : a) Heavier

(3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass between the products and reactants is manifested as the release of large amounts of energy. Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.

Description : (3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass ... . Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.

Last Answer : Helium is added to the oxygen supply of deep sea divers because it is - (1) less poisonous than nitrogen (2) (2) Lighter than nitrogen (3) Readily miscible with oxygen (4) less soluble in blood than nitrogen at high pressure

Where Can I get Helium gas for Balloons?

Description : Where Can I get Helium gas for Balloons?

Last Answer : You can buy helium at Amazon or flipcart. You can not make He at home He is a noble gas you may know . It is extracted from natural gas during the extraction of natural gas from petroleum wells.

What will Happen If I inhale Helium gas from balloons?

Description : What will Happen If I inhale Helium gas from balloons?

Last Answer : If you take one hit you still have oxygen in your lungs, so you live a while longer. If you take a second hit, you have depleted the oxygen in your lungs. At some point you pass out from lack of ... take one hit at a time. But inhaling nitrogen is different: you can pass out with a single breath.

The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen

Description : The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen

Last Answer : ANSWER: Y -- HYDROGEN

Given a specific mylar bladder filled with helium,if I continue to add more gas [pressure] would the vessel lift more weight than its previous lifting strength?

Description : Given a specific mylar bladder filled with helium,if I continue to add more gas [pressure] would the vessel lift more weight than its previous lifting strength?

Last Answer : answer:You do realize that Mylar balloons are not a unibody construction? They have seams which are heat sealed only and not impervious to bursting from too much pressure. You'd be better off with latex balloons. ... balloon boy hoax that nutjob cooked up a few years ago? That's what he used :)

What is the largest known structure in the observable universe -Do You Know?

Description : What is the largest known structure in the observable universe -Do You Know?

Last Answer : Hercules-Corona Borealis Great Wall

The most abundant inert gas in the atmosphere is (1) Helium (2) Neon (3) Argon (4) Krypton

Description : The most abundant inert gas in the atmosphere is (1) Helium (2) Neon (3) Argon (4) Krypton

Last Answer : Argon

Is ice heavier or lighter than liquid water?

Description : Is ice heavier or lighter than liquid water?

Last Answer : I would think it would weigh the same? A scientific mind, I have not. Good question though. Makes me think.

Pick out the wrong statement. (A) A pale color of petroleum product indicates lower viscosity (B) Color of petroleum products indicates the degree of refinement (C) Lighter petroleum distillates are lighter in color than the heavier residual oils (D) Fluorescence of oils helps to detect its adulteration

Description : Pick out the wrong statement. (A) A pale color of petroleum product indicates lower viscosity (B) Color of petroleum products indicates the degree of refinement (C) Lighter petroleum distillates are ... in color than the heavier residual oils (D) Fluorescence of oils helps to detect its adulteration

Last Answer : (A) A pale color of petroleum product indicates lower viscosity

A falling barometer often means rainy weather because water vapor is (lighter or heavier) than oxygen or nitrogen.

Description : A falling barometer often means rainy weather because water vapor is (lighter or heavier) than oxygen or nitrogen.

Last Answer : ANSWER: LIGHTER

A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic number 90 and atomic mass 234, the

Description : A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic number 90 and atomic mass 234, the

Last Answer : A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic ... )^(234)Th` D. `._(91)^(234)Pa`

Which element is more abundant in the universe ?

Description : Which element is more abundant in the universe ?

Last Answer : Hydrogen is the lightest element in the periodic table. It is the most widely found chemical substance in the universe.

What are the most abundant elements in the universe?

Description : What are the most abundant elements in the universe?

Last Answer : The 10 most abundant elements in the universe in from greatest to least are hydrogen, helium, oxygen, neon, nitrogen, carbon, silicon, magnesium, iron, and sulfur. Refer to the related link below for a table that gives the relative abundance of the 10 most abundant elements.

A lighter object A and a heavier object B are initially at rest. Both are imparted the same linear momentum.

Description : A lighter object A and a heavier object B are initially at rest. Both are imparted the same linear momentum.

Last Answer : A lighter object A and a heavier object B are initially at rest. Both are imparted the same linear ... or B or both will start with the same energy?

Why does a heavier object fall with the same acceleration as the lighter object?

Description : Why does a heavier object fall with the same acceleration as the lighter object?

Last Answer : Because the acceleration due to earth (gravitation) dose not depends on the mass of falling object & it's constant for deferent masses :F= (G M m) / d2 (1)F = ma = mg ...(2)mg = (G M ... ) depends only on the distance (d) between Erath and the object and do not depend on the mass of falling object.

Is there different sized TV mounts for lighter and heavier TV sets?

Description : Is there different sized TV mounts for lighter and heavier TV sets?

Last Answer : TV Mounts are all rated by weight capacity and the screen size.You have to get one that matches both criteria for your tv.When you buy it check the specifications for the weight of both the tv and the mount.

When an object is heated, the molecules of that object - (1) began to move faster (2) lose energy (3) become heavier (4) become lighter

Description : When an object is heated, the molecules of that object - (1) began to move faster (2) lose energy (3) become heavier (4) become lighter

Last Answer : (1) began to move faster Explanation: When heat is added to a substance, the molecules and atoms vibrate faster. Then the molecules of that object began to move faster.

In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones. (A) Sulphur increases (B) Sulphur decreases (C) Nitrogen decreases (D) None of these

Description : In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones. (A) Sulphur increases (B) Sulphur decreases (C) Nitrogen decreases (D) None of these

Last Answer : (A) Sulphur increases

Sulphur content in lighter and heavier petroleum products is generally determined respectively by (A) Lamp method and bomb method (B) Bomb method and lamp method (C) Bomb method and quartz tube method (D) Quartz tube method and lamp method

Description : Sulphur content in lighter and heavier petroleum products is generally determined respectively by (A) Lamp method and bomb method (B) Bomb method and lamp method (C) Bomb method and quartz tube method (D) Quartz tube method and lamp method

Last Answer : (B) Bomb method and lamp method

Welded structures with to riveted structures for a certain load are a. Heavier b. Lighter c. Same weight d. None

Description : Welded structures with to riveted structures for a certain load are a. Heavier b. Lighter c. Same weight d. None

Last Answer : b. Lighter

The welded structure with respect to riveted structure is a. Heavier b. Lighter c. Same d. None

Description : The welded structure with respect to riveted structure is a. Heavier b. Lighter c. Same d. None

Last Answer : b. Lighter

A tractor with fewer wheels Base, higher ground clearance may work successful in which soil A. B. 30-35 D. 40-45 Heavier C. Black cotton soil B. Wet soil D. Lighter soil

Description : A tractor with fewer wheels Base, higher ground clearance may work successful in which soil A. B. 30-35 D. 40-45 Heavier C. Black cotton soil B. Wet soil D. Lighter soil

Last Answer : Lighter soil

Name the following : (A) Alkali metal with smallest atom. (B) The most abundant element in the universe.

Description : Name the following : (A) Alkali metal with smallest atom. (B) The most abundant element in the universe.

Last Answer : Name the following : (A) Alkali metal with smallest atom. (B) The most abundant ... hydrogen, aluminium and lithium as its constituent elements.

2nd most abundant element in universe is?

Description : 2nd most abundant element in universe is?

Last Answer : Helium

Most abundant element in the universe?

Description : Most abundant element in the universe?

Last Answer : Hydrogen

Where do helium filled balloons go?

Description : Where do helium filled balloons go?

Last Answer : answer: First of all, only one hundred percent biodegradable latex balloons are used in mass releases. Research showed that these balloons degrade about as quickly as an oak leaf under similar conditions. ... to say whether the knot stays intact when a helium balloon explodes way up there. Source

Where can I buy/rent helium for balloons?

Description : Where can I buy/rent helium for balloons?

Last Answer : Most party places rent tanks. Use the phone book.

Why are weather balloons filled with Helium?

Description : Why are weather balloons filled with Helium?

Last Answer : Hydrogen atoms are much smaller than helium atoms, so they will permeate the latex much quicker. This will lead to the balloon coming down much sooner.

Can I reuse helium Balloons?

Description : Can I reuse helium Balloons?

Last Answer : Yes, if they are made of foil they are reusable and recycled. You can take them to a balloon shop or florist to be refilled with helium. You can recycle them if you have no need to reuse. In all cases here you are the winner. Yes, helium balloons can be reused.

What are some interesting facts about Helium Balloons?

Description : What are some interesting facts about Helium Balloons?

Last Answer : If you are in a car and the car turns a corner, the balloon goes to the INSIDE of the curve. That means if the car goes right the balloon goes right, but you lean left. That is because the ... are thin. Storage bags are thicker, and freezer bags are thickest to keep oxygen out for weeks or months.

What to mix with helium for balloons?

Description : What to mix with helium for balloons?

Last Answer : Feel Free to Answer