The large collection of Stars, dust and gas held together by gravitational attraction between components is known as - (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

The large collection of Stars, dust and gas held together by gravitational attraction between components is known as - (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family
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(3) Galaxy Explanation: The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
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The large collection of Stars, dust and gas held together by gravitational attraction between components is known as (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Description : The large collection of Stars, dust and gas held together by gravitational attraction between components is known as (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Last Answer : (3) Galaxy Explanation: The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.

The large collection of stars, dust and gas held together by gravitational attraction between components is known as – (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Description : The large collection of stars, dust and gas held together by gravitational attraction between components is known as – (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Last Answer : (3) Galaxy Explanation: The term galaxy refers to a large collection of stars, dust, and has clouds which are held together by gravitational attraction. The smallest galaxies may contain only a ... largest galaxies have thousands of billions of stars. The Milky Way galaxy contains our solar system.

The large collection of stars, dust and gas held together by gravitational attraction between components is known as (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Description : The large collection of stars, dust and gas held together by gravitational attraction between components is known as (1) Cluster (2) Atmosphere (3) Galaxy (4) Sun Family

Last Answer : Galaxy

Which of these is a grouping of billions of stars, gas, and dust held together by gravity?

Description : Which of these is a grouping of billions of stars, gas, and dust held together by gravity?

Last Answer : galaxy

The weight of a body is due to (A) Centripetal force of earth (B) Gravitational pull exerted by the earth (C) Forces experienced by body in atmosphere (D) Gravitational force of attraction towards the centre of the earth

Description : The weight of a body is due to  (A) Centripetal force of earth  (B) Gravitational pull exerted by the earth  (C) Forces experienced by body in atmosphere  (D) Gravitational force of attraction towards the centre of the earth 

Last Answer : (D) Gravitational force of attraction towards the centre of the earth 

What is responsible for holding the stars gas and dust together?

Description : What is responsible for holding the stars gas and dust together?

Last Answer : What is the answer ?

The weight of an object at the poles is greater than at the equator. This is because (a) Of the shape of the earth (b) The attraction of the moon is maximum at the earth’s surface (c) The attraction of the sun is maximum at the earth’s surface (d) Gravitational pull is more at the poles

Description : The weight of an object at the poles is greater than at the equator. This is because (a) Of the shape of the earth (b) The attraction of the moon is maximum at the earth’s surface (c) The attraction of the sun is maximum at the earth’s surface (d) Gravitational pull is more at the poles

Last Answer : Ans:(d)

What is a large cloud of dust and gas where new stars are formed called?

Description : What is a large cloud of dust and gas where new stars are formed called?

Last Answer : NEBULAEBecauseA diffuse mass of interstellar dust or gas or both, visible asluminous patches or areas of darkness depending on the way the massabsorbs or reflects incident radiation.;it is a clouds of gas anddust that form a star..........

The main cause of global climatic change is – (1) increase in the content of carbon dioxide in the atmosphere (2) emissions of industrial gases (3) adding of dust (4) changes in plant cover

Description : The main cause of global climatic change is – (1) increase in the content of carbon dioxide in the atmosphere (2) emissions of industrial gases (3) adding of dust (4) changes in plant cover

Last Answer : (1) increase in the content of carbon dioxide in the atmosphere Explanation: Our ever increasing addiction to electricity from coal burning power plants eleases enormous amounts of carbon dioxide ... sources, we are highly dependent on burning coal for our personal and commercial electrical supply.

The tides in the sea are primarily due to – (1) the atmospheric effect of the Earth (2) the gravitational effect of Venus on the Earth (3) the gravitational effect of the Sun on the Earth (4) the gravitational effect of the Moon on the Earth

Description : The tides in the sea are primarily due to – (1) the atmospheric effect of the Earth (2) the gravitational effect of Venus on the Earth (3) the gravitational effect of the Sun on the Earth (4) the gravitational effect of the Moon on the Earth

Last Answer : Explanation: A tide is the periodic rising and falling of Earth's ocean surface caused mainly by the gravitational pull of the Moon acting on the oceans. The height of tides varies somewhat with the phases ... higher because the Sun's tidal force adds to the Moon's. This is called "spring tide".

Tides in the sea are caused by – (1) effect of Sun (2) effect of Moon (3) eombined effect of Moon and Sun (4) gravitational force of Earth and Sun

Description : Tides in the sea are caused by – (1) effect of Sun (2) effect of Moon (3) eombined effect of Moon and Sun (4) gravitational force of Earth and Sun

Last Answer : (3) eombined effect of Moon and Sun Explanation: Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun.

Tides are caused by the gravitational pull of the – (1) Earth on the Moon (2) Earth on the Sun (3) Sun and Moon on the Earth (4) Moon on the Earth

Description : Tides are caused by the gravitational pull of the – (1) Earth on the Moon (2) Earth on the Sun (3) Sun and Moon on the Earth (4) Moon on the Earth

Last Answer : (3) Sun and Moon on the Earth Explanation: Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force ... 's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.

Airmass near to the earth's surface is warmer because it – (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Description : Airmass near to the earth's surface is warmer because it – (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Last Answer : (3) is warmed by terrestrial radiation Explanation: The air close to the ground is warmer because the earth's surface is what heats the atmosphere, for the most part. Terrestrial radiation accounts for ... Earth's surface. The further away from the earth's surface we go, the cooler the atmosphere.

The sphere of living matter together with water, air and soil on the surface of the earth is known as – (1) Lithosphere (2) Biosphere (3) Hydrosphere (4) Atmosphere

Description : The sphere of living matter together with water, air and soil on the surface of the earth is known as – (1) Lithosphere (2) Biosphere (3) Hydrosphere (4) Atmosphere

Last Answer : (2) Biosphere Explanation: Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not ... supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.

Name the cloud of gas and dust in which new stars form. -Space

Description : Name the cloud of gas and dust in which new stars form. -Space

Last Answer : Nebula is the cloud of gas and dust from which new stars form.

What is a spherical cluster of stars?

Description : What is a spherical cluster of stars?

Last Answer : That is called a globular cluster.

What is a spherical cluster of stars?

Description : What is a spherical cluster of stars?

Last Answer : That is called a globular cluster.

A small cluster of stars appear, after many decades of observation, to be converging toward a common point in the sky. Does the light from these stars show a: w) red Doppler shift x) blue Doppler shift y) no Doppler shift

Description : A small cluster of stars appear, after many decades of observation, to be converging toward a common point in the sky. Does the light from these stars show a: w) red Doppler shift x) blue Doppler shift y) no Doppler shift

Last Answer : ANSWER: W -- RED DOPPLER SHIFT 

Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. (A) 200°C and 5 atm (B) 1000°C and 10 atm (C) 500°C and 50 atm (D) 1000°C and 500 atm

Description : Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. (A) 200°C and 5 atm (B) 1000°C and 10 atm (C) 500°C and 50 atm (D) 1000°C and 500 atm

Last Answer : (B) 1000°C and 10 atm

Dust collection efficiency of a cyclone separator depends upon its (A) Diameter (B) Inlet gas velocity (C) Overall height (D) All (A), (B) & (C)

Description : Dust collection efficiency of a cyclone separator depends upon its (A) Diameter (B) Inlet gas velocity (C) Overall height (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature (C) Electrostatic precipitator is the most efficient dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these

Description : Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for ... dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these

Last Answer : (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature

You are sitting next to your friend on ground. Is there any gravitational force of attraction between you two?

Description : You are sitting next to your friend on ground. Is there any gravitational force of attraction between you two?

Last Answer : You are sitting next to your friend on ground. Is there any gravitational force of attraction ... gravitational force of the earth coming in picture?

What happens to the gravitational attraction between two objects if one or both objects acquires more mass?

Description : What happens to the gravitational attraction between two objects if one or both objects acquires more mass?

Last Answer : As mass increases, so does the gravitational pull from theobject.

Two steel balls are at a distance S from one another. As the mass of ONE of the balls is doubled, the gravitational force of attraction between them is: w) quartered x) halved y) doubled z) quadrupled

Description : Two steel balls are at a distance S from one another. As the mass of ONE of the balls is doubled, the gravitational force of attraction between them is: w) quartered x) halved y) doubled z) quadrupled

Last Answer : ANSWER: Y -- DOUBLED 

Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection

Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection

Last Answer : ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION

Pick up the correct statement from the following: (A) The amount of water retained on the surface of soil grains by molecular attraction, is known as pellicular water(B) The degree of resistance to movement of the pellicular water generally expressed by the surface tension (C) The pellicular water held in any soil, is called field capacity (D) All the above

Description : Pick up the correct statement from the following: (A) The amount of water retained on the surface of soil grains by molecular attraction, is known as pellicular water (B) The degree of resistance to ... (C) The pellicular water held in any soil, is called field capacity (D) All the above

Last Answer : Answer: Option D

Some people in Manipur live in houses bunt on floating islands of weeds and decaying vegetation held together by suspended slit. These islands are called (a) Tipis (b) Barkhans (c) Phoomdis (d) Izba

Description : Some people in Manipur live in houses bunt on floating islands of weeds and decaying vegetation held together by suspended slit. These islands are called (a) Tipis (b) Barkhans (c) Phoomdis (d) Izba

Last Answer : Ans: (c)

Which characteristic of the Sun primarily determines the orbits of planets in our solar system A Large volume B Strong gravitational field C Mostly made of hydrogen D High surface temperatures?

Description : Which characteristic of the Sun primarily determines the orbits of planets in our solar system A Large volume B Strong gravitational field C Mostly made of hydrogen D High surface temperatures?

Last Answer : B (gravity)

If the distance between the earth and the sun were twice what it is now, the gravitational force exerted on the earth by the sun would be (a) twice as large as it is now (b) four times as large as it is now (c) half of what it is now (d) one-fourth of what it is now

Description : If the distance between the earth and the sun were twice what it is now, the gravitational force exerted on the earth by the sun would be (a) twice as large as it is now (b) four times as large as it is now (c) half of what it is now (d) one-fourth of what it is now

Last Answer : Ans:(d)

A pulsar is a rapidly spinning neutron star which emits: A. A blinding light when it aligns with the planets B. Radio waves detectable from Earth (Answer) C. A gravitational pull which attracts high energy dust particles D. Enough energy to power itself indefinitely

Description : A pulsar is a rapidly spinning neutron star which emits: A. A blinding light when it aligns with the planets B. Radio waves detectable from Earth (Answer) C. A gravitational pull which attracts high energy dust particles D. Enough energy to power itself indefinitely

Last Answer : B. Radio waves detectable from Earth (Answer)

Operating principle of cyclone separator is based on the action of __________ dust particles. (A) Diffusion of (B) Centrifugal force on (C) Gravitational force on (D) Electrostatic force on

Description : Operating principle of cyclone separator is based on the action of __________ dust particles. (A) Diffusion of (B) Centrifugal force on (C) Gravitational force on (D) Electrostatic force on

Last Answer : (B) Centrifugal force on

Troposphere is the hottest part of the atmosphere because- (1) it is closest to the Sun (2) there are charged particles in it (3) it is heated by the Earth's surface (4) heat is generated in it

Description : Troposphere is the hottest part of the atmosphere because- (1) it is closest to the Sun (2) there are charged particles in it (3) it is heated by the Earth's surface (4) heat is generated in it

Last Answer : (3) it is heated by the Earth's surface Explanation: The lowest part of the troposphere is the warmest because it is closest to the ground, where the heat is coming from.

How can I avoid excessive dust collection?

Description : How can I avoid excessive dust collection?

Last Answer : You can dust your house frequently with pledge products. Also, vacuum frequently to rid your house of pet hair, one of the worst causes of dust.

Browning of paper in old books is caused by – (1) frequent use (2) lack of aeration (3) collection of dust (4) oxidation of cellulose

Description : Browning of paper in old books is caused by – (1) frequent use (2) lack of aeration (3) collection of dust (4) oxidation of cellulose

Last Answer : (4) oxidation of cellulose Explanation: Foxing is a term describing the age-related spots and browning seen on vintage paper documents such as books, postage stamps, certificates, and so forth. It ... oxidation of cellulose or the effect on certain papers of the oxidation of iron, copper, etc.

Which of the following dust collection equipments is the least efficient (for sub-micronic particles)? (A) Dust catcher (gravity type) (B) Cyclone separator (C) Bag filter (D) Hollow wet scrubber

Description : Which of the following dust collection equipments is the least efficient (for sub-micronic particles)? (A) Dust catcher (gravity type) (B) Cyclone separator (C) Bag filter (D) Hollow wet scrubber

Last Answer : (A) Dust catcher (gravity type)

Browning of paper in old books is caused by (1) frequent use (2) lack of aeration (3) collection of dust (4) oxidation of cellulose

Description : Browning of paper in old books is caused by (1) frequent use (2) lack of aeration (3) collection of dust (4) oxidation of cellulose

Last Answer :  oxidation of cellulose

Explain ash disposal and dust collection in a thermal power plant.

Description : Explain ash disposal and dust collection in a thermal power plant.

Last Answer : Ash disposal:-  Various methods of disposal of ash are:  Mechanical handling system.  Pneumatic system. Hydraulic system  Steam jet system  Commonly used ash handling ... be done either manually or automatically.  This removed fly ash is collected in separate container

Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Description : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Last Answer : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. ... . `DeltaS` of micelle formation is negative

What is the main attraction of Kaziranga Sanctuary located in Assam? (a) Tiger (b) Spotted deer (c) Nilgai (d) One horned Rhinoceros

Description : What is the main attraction of Kaziranga Sanctuary located in Assam? (a) Tiger (b) Spotted deer (c) Nilgai (d) One horned Rhinoceros

Last Answer : Ans: (d)

The main cause of Tsunami is : (1) Volcanoes (2) Cyclones (3) Earthquake on sea floor (4) Moon's attraction

Description : The main cause of Tsunami is : (1) Volcanoes (2) Cyclones (3) Earthquake on sea floor (4) Moon's attraction

Last Answer : (3) Earthquake on sea floor Explanation: A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. ... , meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.

Sun also has the Hadoop Live CD ________ project, which allows running a fully functional Hadoop cluster using a live CD. a) OpenOffice.org b) OpenSolaris c) GNU d) Linux

Description : Sun also has the Hadoop Live CD ________ project, which allows running a fully functional Hadoop cluster using a live CD. a) OpenOffice.org b) OpenSolaris c) GNU d) Linux

Last Answer : OpenSolaris

When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? (1) Hydrogen bond formation (2) Vander waals forces (3) Covalent attraction (4) Dipole interaction

Description : When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? (1) Hydrogen bond formation (2) Vander waals forces (3) Covalent attraction (4) Dipole interaction

Last Answer : (1) Hydrogen bond formation Explanation: When two ice cubes are pressed together, they join to form one cube due to hydrogen bond.

When two or more atoms are linked together the force holding them together is called a _____. a. charged particle b. chemical bond. c. electric attraction. d. magnetic bond.

Description : When two or more atoms are linked together the force holding them together is called a _____. a. charged particle b. chemical bond. c. electric attraction. d. magnetic bond.

Last Answer : b. chemical bond.

When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? (1) Hydrogen bond formation (2) Vander waals forces (3) Covalent attraction (4) Dipole interaction

Description : When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? (1) Hydrogen bond formation (2) Vander waals forces (3) Covalent attraction (4) Dipole interaction

Last Answer : Hydrogen bond formation

In large thermal power stations very fine particulates present in flue gas are removed by (A) Wet scrubber (B) Bag filter (C) Electrostatic precipitators (D) Dust catcher

Description : In large thermal power stations very fine particulates present in flue gas are removed by (A) Wet scrubber (B) Bag filter (C) Electrostatic precipitators (D) Dust catcher

Last Answer : (C) Electrostatic precipitators

Which of the following will give a more “accurate” representation of the population from which a sample has been taken? a. A large sample based on the convenience sampling technique b. A small sample based on simple random sampling c. A large sample based on simple random sampling d. A small cluster sample

Description : Which of the following will give a more accurate representation of the population from which a sample has been taken? a. A large sample based on the convenience sampling technique b. A small ... simple random sampling c. A large sample based on simple random sampling d. A small cluster sample

Last Answer : c. A large sample based on simple random sampling

What is the force of attraction between Moon and Sun ?

Description : What is the force of attraction between Moon and Sun ?

Last Answer : The "gravitational" force of gravity acts between the moon and the sun.

Tides in the sea have stored in them : (1) Hydraulic energy (2) Kinetic energy (3) Gravitational potential energy (4) A combination of all the above three forms of energy

Description : Tides in the sea have stored in them : (1) Hydraulic energy (2) Kinetic energy (3) Gravitational potential energy (4) A combination of all the above three forms of energy

Last Answer : (3) Gravitational potential energy Explanation: Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation ... is channeled into a large basin behind the darn, holding a large amount of potential energy.

The soil water which is of the greatest importance to the plant life is– (1) Gravitational water (2) Capillary water (3) Hygroscopic water (4) Combined water

Description : The soil water which is of the greatest importance to the plant life is– (1) Gravitational water (2) Capillary water (3) Hygroscopic water (4) Combined water

Last Answer : (2) Capillary water Explanation: Capillarity is the primary force that enables the soil to retain water, as well as to regulate its movement. The phenomenon of capillarity also occurs in the soil. In ... is of no use to plants because it occupies the larger pores. It reduces aeration in the soil.

Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Description : Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Last Answer : (3) gravitational pull Explanation: The atmosphere is made up of gasses. Gasses are physical substances, and all physical substance has weight. The atmosphere is 25 miles thick, and that 25 miles ... square inch because of the gravitational pull. That's how atmosphere exerts pressure on the earth.