Atif Pedia

 1. What is the approximate mean distance that separates the sun from the earth?
(a) 1600,90,000 kms
(b) 1480,00,000 kms
(c) 1500,00,000 kms
(d) 1890,70,000 kms

2. The outer surface of the sun is called?
(a) Thermosphere
(b) Lithosphere
(c) Ionosphere
(d) Photosphere 

3. Which planet has the maximum number of satellites?
(a) Mars
(b) Mercury 
(c) Venus
(d) Jupiter

4. What is a light year?
(a) The year marked by extraordinary amount of radiation of sleight
(b) The year marked by the extraordinary less amount of radiation of sunlight reaching the earth due to protracted cloudy weather on earth making that year lighter than the normal
(c) The year in which the sun radiates more light making one complete extra day in February
(d) The distance travelled by light in 01 year. 

5. What are Red Giants?
(a) Stars which appear red because of their consuming a portion of their hydrogen. 
(b) The cluster of giant sized stars visible near mars
(c) Stars which consume some of their oxygen and thus appear red due to lack of O2
(d) Powerful communist countries.

6. What are asteroids?
(a) Piece of falling stares
(b) Satellite of other planets
(c) Very small planet revolving around the sun
(d) Rocks found on the moon

7. What is the temperature at the centre of the sun?
(a) 6 million k
(b) 10 million k
(c) 12 million k
(d) 20 million k (Correct)

8. The phase of moon are partially the result of the?
(a) Changes in the shape of the moon
(b) Revolution of the moon about the earth (Correct)
(c) Variation in the moon’s gravitation
(d) Variation in the speed of rotation of the moon

9. Constellations referred to as Zodiac are?
(a) Imaginary region that encompass the path of the planets (Correct)
(b) Signs of Roman god
(c) A group of stars
(d) None of these

10. The height of a geo-stationary satellite from the surface of the earth is about?
(a) 360 km
(b) 3600 km (Correct)
(c) 23000 km
(d) 360,000 km

1. Which of the following explain the reasons why there is no total eclipse of the sun?
(a) Area of the sun covered by the moon (Correct)
(b) Direction rotation around the sun
(c) Orbit of moon around the sun
(d) Size of earth in relation to that of moon

2. The instrument used to measure the specific gravity of milk is?
(a) Barometer
(b) Hygrometer
(c) Lactometer (Correct)
(d) None of these

3. The internal antenna of transistor set is made of?
(a) Iron
(b) Ferror Chrome (Correct)
(c) Copper
(d) Alnico

4. Gerontology is the study of?
(a) Process of ageing (Correct)
(b) Growth of cells
(c) Birds
(d) Vegetables

5. Helium is used for respiration in deep water instead of nitrogen because
(a) It is heavier than nitrogen (Correct)
(b) It is higher than nitrogen
(c) It mixes less in blood than nitrogen
(d) It helps oxygen to burn more quickly

6. In a fluorescent tube which of the following components are found?
(a) Mercury vapour (Correct)
(b) Argon and carbon dioxide
(c) Helium and oxygen
(d) Argon and neon

7. The common ore of aluminium is?
(a) Chromite` (Correct)
(b) Cryolite
(c) Bauxite
(d) Monazite

8. When one enters a dark room, he is not able to see anything but, after sometime vision
improves. This is because?
(a) The retina of the eye comes forward
(b) The retina of the eye moves backward
(c) The pupil of the eye contracts
(d) The pupil of the eye dilates (Correct)

9. Radio carbon dating is used to find the age of?
(a) Fossils (Correct)
(b) Building
(c) Rocks
(d) Babies

10. What is periscope used for?
(a) To survey the ships on the surface of the sea when the submarine is under water (Correct) (Correct)
(b) To extinguish fire
(c) To measure purity of milk
(d) None of the above

1. If an iron is marked 750 watts by 250 volts, then it was designated to take a current of
(a) 3 Amperes
(b) 9 Amperes
(c) 6 Amperes
(d) 15 Amperes

2. The blue colour of the sky is due to
(a) Polarization of light
(b) Scattering of light 
(c) Reflection of light
(d) None of these

3. Geiger counter is an instrument
(a) Determine the heart beat rate
(b) To detect radioactive radiation 
(c) To measure intensity of visible light
(d) To count the baggage of an airport

4. When we are looking at a rainbow in front of us, The sun must be
(a) High in the sky and is located either on our right or left
(b) In front of us
(c) Behind us
(d) None of these

5. When as the satellite is in the geostationary orbit, its
(a) Orbital distance is equal to the radius of the earth
(b) Acceleration is zero
(c) Orbital period is about 24 hours
(d) Angular velocity is zero

6. The most intense man-made light source is
(a) Master 
(b) Laser
(c) Mercury Vapour Lamp
(d) Light emitting diode LED)

7. How many calories will b needed to raise the temperature of 10 grams of water from 200 to 3000?
(a) 1 
(b) 10
(c) 100
(d) 200

8. The branch of biological science ” Ecology ” deals with the study of
(a) Plants in relation to their environment
(b) Animals in relation to plants
(c) All living things in relation to their environment
(d) Animals in relation to their environment

9. The film of oil and soapy water owe their brilliant colours to a combination of light reflection and
(a) Refraction
(b) Polarization
(c) Diffraction
(d) Interference

10. The solar ultraviolet rays do not harm living organism because
(a) The ozone layer of the atmosphere weakens them
(b) They are weak rays
(c) They have to pass through a thick column of the atmosphere
(d) The atmospheric nitrogen dilutes them

 1. Hormones assist in which one of the following activities?
(a) Digestion of food
(b) Activities of enzymes
(c) Regulation of the body process (Correct)
(d) Maintaining on optimum level of pH in the body

2. Urea and Uric acid are formed in the metabolism of
(a) Sugars
(b) Fats
(c) Proteins (Correct)
(d) Minerals

3. The most highly contractile part of human body is
(a) Skin
(b) Stomach
(c) Urinary bladder
(d) Iris (Correct)

4. Which one of the following is a tissue?
(a) Liver
(b) Heart
(c) Skin (Correct)
(d) Blood

5. Which one of the following disease is hereditary?
(a) Anemia
(b) Nephritis
(c) Diabetes (Correct)
(d) Night blindness

6. A man suffering from the bleeding of gums is advised to take
(a) Milk & carrot
(b) Sufficient protein
(c) Citrus fruit (Correct)
(d) water

7. Our teeth & bone are made of mainly
(a) Calcium hydrogen phosphate
(b) Calcium phosphate
(c) Calcium sulphate
(d) None of these (Correct)

8. Gastric juice is produced in
(a) Mouth
(b) Liver
(c) Pancreas
(d) Stomach (Correct)

9. The red blood cell in a human body die after about
(a) 150 days
(b) 120 days (Correct)
(c) 90 days
(d) 157 days

10. Of the following organs in human body, largest is
(a) Kidney
(b) Heart
(c) Brain
(d) Liver (Correct)