Tag: evs - i

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Questions Related to evs - i

Multiple choice evs - i substances, objects and energy the states of substances introduction to matter gaseous state

A state of matter is characterized by _________.

  1. temprature

  2. pressure

  3. phase transition

  4. none of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A state of matter is also characterized by phase transitions. A phase transition indicates a change in structure and can be recognized by an abrupt change in properties. A distinct state of matter can be defined as any set of states distinguished from any other set of states by a phase transition.

Multiple choice evs - i substances, objects and energy the states of substances introduction to matter gaseous state

Select the correct answer from the choices given below. The three states of matter are classified on the basis of differences of certain _________.

  1. chemical properties

  2. physical properties

  3. physical and chemical properties

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The three states of matter are classified on the basis of differences of certain physical properties such as physical existence; solids are physically hard, they have fixed shape and size. Liquids do not have any fixed shape and size, they changed according to the shape of beakers in which they are placed. Gases do not have a fixed shape or volume.

Multiple choice evs - i substances, objects and energy the states of substances introduction to matter gaseous state

The decreasing order of diffusion is ___________.

  1. Gas > Solid > liquid

  2. Liquid > Gas > Solid

  3. Solid > Liquid > Gas

  4. Gas > Liquid > Solid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The spaces between the particles of gas are more so they can mix into each other very easily. 

Solid has the least intermolecular space, therefore, it is very difficult to mix with another solid. 
On the other hand, liquids have some diffusion ability.

So, the correct option is $D$

Multiple choice evs - i substances, objects and energy the states of substances introduction to matter gaseous state

Arrange the following substances in increasing order of forces of attraction.

  1. Oxygen, water, sugar

  2. Sugar, water, oxygen

  3. Water, sugar, oxygen

  4. Sugar, oxygen, water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The forces of attraction are strongest in solids, followed by liquids and the weakest in gases.oxygen is a gas, water is a liquid and sugar is a crystalline solid. 


So the increasing order of forces of attraction is oxygen $<$ water $<$sugar.

So, the correct option is $A$

Multiple choice evs - i universe and space science launching of an artificial satellites around the earth launching of satellite india’s space programmes

The full form of NASA is ?

  1. National Aerospace and Space Administration

  2. National Aeronautics and Satellite Administration

  3. National Aeronautics and Space Administration

  4. National Aeronautics and Space Academy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The National Aeronautics and Space Administration (NASA) is an independent agency of the US federal govt. responsible for the civilian space program and aeronautics and aerospace research.

Multiple choice evs - i universe and space science launching of an artificial satellites around the earth launching of satellite india’s space programmes

State whether the given statement is True or False :

The space shuttle is moving van which carries astronauts and many things in space ?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The given statement is true. Space shuttle carries satellites to space for research work. Along with research, space shuttle is also used to carry astronauts on various heavenly bodies for research work.