Fact sheet about life cycle of stars

  •  Study of Celestial body is known as Astronomy.
  • Collection of all the visible celestial bodies in the sky is called universe.
  • Celestial body which is having its own light and heat is called Star.
  • Before becoming a star it is a sphere of rare gases.
  • When the rare gases are co-centered, they form dense cloud which is known as Nebula.
  • When these gaseous clouds Nebula starts burning due to fusion it become star.
  • In stars hydrogen (H) is converted to helium (He) by fusion. And due to this process it release heat and light.
  • Fuel of star is in Plasma state
  • Colors of stars depend of the temperature of its surface area.
  • Depending on its surface temperature stars are of :-
  • Red Color – Low Temp
  • White Color – Medium Temp
  • Blue Color – High Temp
  • Future of a star depends on its initial mass.
  • When fuel of star (sun) starts ending its size starts increasing and become Red Giant.
  • For the stars size measurement (comparison) we use Chandra Shekhar Limt. 
  • 1.5 times (exact 1.44) of sun mass is known as Chandra Shekhar limit. So if a star is having mass 1.5 more than our sun is called as big star and if its mass is less than 1.5 times of sun we call it as small star.

  • Density of Black hole is very high and even light cannot pass through it.
  • Black hole has also very high magnetic attraction and it can attract white dwarf and black dwarf too.
  • White Hole  is a imagination in which we believe that all light is coming from a point.

Kerala Gk in Hindi

Kerala General Knowledge Questions
GK Quiz 10

Que: The cardamon Board is in  ?
Ans: Kochi

Que: The district which has the maximum number of coir factories is  ?
Ans: Alappuzha

Que: The poet who known as 'Kerala Kalidasan'  ?
Ans: Kerala Varma Valiya Koi Thampuran

Que: Who was known as 'Garbha Sreeman'  ?
Ans: Swathi Thirunal

Que: The  Governor of Kerala who become the President of India ?
Ans: V.V.Giri

Que: The founder of Travencore University  ?
Ans: Sree Chithira Thirunal

Que: The exponent of “Vanchippattu”  ?
Ans: Ramapurathu Varier

Que: What is known as "Venice of Kerala" ?
Ans: Alappuzha

Que: The district where pepper is grown most   ?
Ans: Kannur

Que: The journalist to be exited from erstwhile in Travancore   ?
Ans: Swadesabhimani Ramakrishna Pillai

Next Quiz
Quiz:   1  2  3  4  5  6  7  8  9  10

Kerala GK Quiz
Kerala GK Quiz 

Kerala GK News

Kerala General Knowledge Questions
GK Quiz 9

Que: Who wrote “Jnanappana”   ?
Ans: Poothanam

Que: The most popular travelogue writer in kerala   ?
Ans: S.K.Pottakkadu

Que: The Christian art associated with weaponry is   ?
Ans: Chavittunadakam

Que: The only township in Kerala   ?
Ans: Guruvayur

Que: The most popular and priced literay award in Malayalam   ?
Ans: Mathrubhumi Award

Que: The Athlete who entered the final of the Olympics athletic event   ?
Ans: P.T.Usha

Que: Who is the responsible for the world renown of “Kadhakali”   ?
Ans: Vallathol

Que: The only Fine Art College in Kerala   ?
Ans: Thiruvananthapuram

Que: Who brought tapioca to Kerala   ?
Ans: Avittom Thirunal

Que: When did St. Thomas arrived in Kerala   ?
Ans: AD.52

Next Quiz
Quiz:   1  2  3  4  5  6  7  8  9  10
Kerala GK Quiz
Kerala GK Quiz 

Physics Questions and Answers

Physics GK Question Quiz 4

Que: What happens when a body is moving in a circular path with a constant speed?
    1. Force acting on it is zero
    2. Acceleration is not uniform
    3. Velocity is uniform
    4. Velocity is changing
Correct Answer :- Velocity is changing

Que: What happens when an object falls freely?
    1. Kinetic energy increases
    2. Potential energy increases
    3. Potential energy is converted to kinetic energy
    4. Potential energy decreases
Correct Answer :- Potential energy increases

Que: A girl travels 6m towards east and then 8 m towards north. Her displacement is:
    1. 7 m
    2. 10 m
    3. 14 m
    4. 2 m
Correct Answer :- 10 m / 10 рдоी.

Que: The SI unit of velocity is:
    1. ft/s
    2. m/s
    3. km/h
    4. m/h
Correct Answer :- m/s

Que: The value of acceleration due to gravity is:
    1. same at equator and poles
    2. increased from pole to equator
    3. least at equator
    4. least at poles
Correct Answer :- least at equator

Que: The unit of sound intensity is:
    1. J/m2
    2. W/m2
    3. W/s
    4. J/s
Correct Answer :- W/m2

Que: Which one of the following statements is TRUE about internal combustion engines?
    1. 4-Stroke engines are less efficient but generate more power than 2-stroke engines.
    2. 4-Stroke engines are less fuel efficient and generate less power than 2-stroke engines.
    3. 4-Stroke engines are more efficient and generate more power than 2-stroke engines.
    4. 4-Stroke engines are more fuel efficient but generate less power than 2-stroke engines.
Correct Answer :- 4-Stroke engines are more fuel efficient but generate less power than 2-stroke engines.

Que: A bag of wheat is weighed at a place near the equator and the same is taken to Antarctica. The weight of the bag will be_________.
    1. same at both the places
    2. less at Antarctica
    3. more at Antarctica
    4. zero at Antarctica
Correct Answer :- more at Antarctica

Que: An electric train is moving with a speed of 180 km/h. How much distance will it cover in 1 minute?
    1. 180 m
    2. 50 m
    3. 300 m
    4. 3 km
Correct Answer :- 3 km

Que: In vacuum, a beach ball falls at the same rate as an apple because: /
    1. in vacuum there is no gravity
    2. the frictional force acting on both is the same
    3. the acceleration due to gravity is same for both
    4. in vacuum the gravitational force acting on both is the same
Correct Answer :- the acceleration due to gravity is same for both


Physics Questions and Answers in Hindi

physics mcq questions and answers pdf

Physics GK Question Quiz 3

Que: A car traveled 50 m in 30 sec along a horizontal road. It reached the destination with a velocity 4 times of its initial velocity. During the process, what happens to the potential energy of the car?
     1. Became 2 times of initial potential energy
     2. Became 4 times of initial PE
     3. Became 8 times of initial PE
     4. Did not change
Correct Answer:- 4. Did not change

Que: A black body is at a temperature of 727°C. It emits energy at a rate which is proportional to:
     1. (1000)3
     2. (1000)4
     3. (727)2
     4. (727)4
Correct Answer :- (1000)4

Que: Which of the following is not a characteristic of a musical sound?
     1. Quality
     2. Loudness
     3. Wavelength
     4. Pitch
Correct Answer:- Wavelength

Que: Which of the following does not have unit as Joule?
    1. Work
    2. Force
    3. Kinetic energy
    4. Heat
Correct Answer:- Force

Que: Which among the following does not possess kinetic energy?
    1. A ball thrown upwards
    2. A battery
    3. A moving car
    4. A flying bird
Correct Answer:-  A battery

Que: A train moving with a velocity of 30 km/h has a kinetic energy of 52000 J. When the velocity of train is increased to 60 km/h, the work done is:
    1. Work done = 0
    2. 156000 J
    3. 104000 J
    4. 52000 J
Correct Answer :- 156000 J

Que: A body of mass 2 kg undergoes a change of velocity of 5 m/s in 5s. The force acting on it is:
    1. 10 N
    2. 1 N
    3. 2 N
    4. 5 N
Correct Answer :- 2 N

Que: If the object is at rest, then the slope of position-time graph:
    1. is zero
    2. may be zero
    3. cannot be zero
    4. always greater than zero
Correct Answer :- is zero

Que: If the velocity of an object is directly proportional to the time, then the object has:
    1. variable acceleration
    2. uniform acceleration
    3. uniform velocity 
    4. uniform speed
Correct Answer :- uniform acceleration

Que: Bats detect obstacles on their path by receiving the reflected_________.
    1. electro-magnetic waves
    2. ultrasonic waves
    3. radio waves
    4. infrasonic waves
Correct Answer :- ultrasonic waves


physics mcq questions and answers pdf