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1) The SI base unit for mass is_____________? a. Gram b. Pound c. Kilogram d. Ounce
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2) The average speed of a moving object during a given interval of time is always: a. the magnitude of its average velocity over the interval b. the distance covered during the time interval divided by the time interval c. one-half its speed at the end of the interval d. its acceleration multiplied by the time interval e. one-half its acceleration multiplied by the time interval
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3) All of the following statements are incorrect except: a. Precision and accuracy should go side by side in a scientific work b. Scientific work must be precise, accuracy is not essential c. Scientific work must be accurate, precision is not essential d. Calculations must be made before any experiment
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4) An atom is_____________? a. smallest indivisible particle in an element b. smallest particle of an element which can undergo a chemical reaction c. building block of an element d. always smaller than molecule
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5) Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to____________? a. hydrogen bonding b. irregular shape of the molecules c. irregular shape of the molecules and strong inter-molecular forces d. greater molecular size
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6) Rate of evaporation of petrol is greater than that of water at room temperature because: a. petrol molecules do not have any hydrogen bond b. petrol is an organic compound c. water molecules have small size d. petrol molecules have greater size
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7) The increasing vapor pressure caused by heating a liquid is due to___________? a. increase inter-molecular interactions b. increasing potential energy of molecules c. increasing kinetic energy of molecules d. decreasing surface tension
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8) Color of the glow produced in the discharge tube: a. depends on the pressure in the discharge tube b. depends on the metal used as cathode c. depends on the gas used in the discharge tube d. does not depend on the nature of the gas used in the discharge tube
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9) Nuclear radiation is emitted by those elements whose: a. molecules are stable b. molecules are unstable c. nuclei are stable d. nuclei are unstable
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10) Second ionization energy: a. is always less than first ionization energy b. is always greater than first ionization energy c. is equal to the first ionization energy d. may be greater or less than the first ionization energy depending on the nature of the element
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11) All of the following are electromagnetic radiations except__________? a. Red light b. Sound waves c. X-Rays d. Photon
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12) Which of the following has the highest energy? a. gamma rays b. X-rays c. Ultra-violet radiation d. radio waves
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13) Which of the following has the largest wavelength? a. visible light b. x-rays c. infrared light d. ultraviolet radiation
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14) Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy? a. radio, visible, infrared, ultraviolet, x-ray, gamma ray b. radio, infrared, visible, x-ray, gamma ray, ultraviolet c. visible, radio, infrared, ultraviolet, x-ray, gamma ray d. radio, infrared, visible, ultraviolet, x-ray, gamma ray
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15) “Each electron in an atom must have its own unique set of quantum numbers” is a statement of_______________? a. Aufbau principle b. Pauli exclusion principle c. Hund’s rule d. Periodic law
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16) One of the following ways of expressing the concentration of a solution does not depend on temperature. It is__________? a. Molarity b. Molality c. Normality d. Formality
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17) A substance which increases the efficiency of a catalyst is termed as: a. Promoter b. Activator c. Retarder d. Super catalyst
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18) The amount of energy required by the children of age between one to three years is___________? a. 300 k Calories b. 600 k Calories c. 900 k Calories d. 1200 k Calories
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19) According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in____________? a. 1 hours b. 5 hours c. 10 hours d. 15 hours
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20) In eye donation, which one of the following parts of donor’s eye is utilized ? a. Iris b. Lens c. Cornea d. Retina
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21) The ‘stone’ formed in human kidney consist mostly of_____________? a. Calcium oxalate b. Sodium acetate c. Magnesium sulphate d. Calcium
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22) Approximately, how many times each day do our heart valves open and close normally? a. 10,000 b. 1,00,000 c. 1,50,000 d. 2,00,000
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23) Quantity of fresh air required for a man is 1000 cubic feet of air for every____________? a. 5 minutes b. 10 minutes c. 15 minutes d. 20 minutes
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24) What kind of weathering takes place on the valley side above the surface of the glacier? a. Plucking b. Abrasion c. Chemical weathering d. Frost shattering
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25) What is meant by “Equinox”? a. The longest day b. The shortest day c. The sun-month long day d. Equal duration of day and night
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26) The oldest barrage on the river Indus at Sukkur was built in_____? a. 1932 b. 1940 c. 1930 d. 1928
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27) When a warm air is lifted off the surface in temperature depression it is called ________? a. An occlusion b. A cold front c. An anticyclone d. A warm front
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28) Water vapour turns into clouds in the atmosphere when: a. It rains b. The temperature rise c. Dew point is reached d. Evaporation takes place
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29) Weather describe the condition of ______ at any one time. a. The earth b. The land surface c. The atmosphere d. The ionosphere
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30) A wind which reverses seasonally is known as_____? a. Trade b. Cyclonic c. Monsoon d. Polar
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31) Which of the statements to about the Troposphere is not true? a. It contains 85-90% of the atmosphere’s mass b. It contains nearly all the water and oxygen of the atmosphere c. It is the zone which exhibits changes in condition of weather d. It is about 350 km thick
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32) The final phase of a star’s evolution is determined by the star’s: a. Age b. Gravitational pull c. Density d. Mass
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33) Which of these is not a Metamorphic rock? a. Quartzite b. Slate c. Gneiss d. Schist e. Diorite
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34) The strength of wave action depends on all these EXCEPT: a. Currents in the sea b. Wind strength c. Depth of coastal water d. Height of waves
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35) In the Composition of the earth, Aluminum is _______________? a. 27.5% b. 20.3% c. 14.5% d. 8.23%
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36) “Rancidity produced in butter can be decreased by adding quinoline to the butter”. This statements shows that _______________? a. Nothing is impossible b. Quinoline is an inhibitor c. Quinoline is a catalyst d. Quinoline is an activator
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37) Gulf streams are caused by__________. a. Cyclones b. Ocean Pressure c. Temperature d. Difference in water level
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38) The production of rubber tree is better adopted to areas where the climate is_________ a. Warm and humid b. Warm and dry c. Cool and moist d. cool and dry
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39) There are three types of plate boundaries i.e Divergent, Convergent and____________ a. Normal b. Transform c. Complex d. Plain
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40) The speed of light with the rise in the temperature of the medium____________? a. Decrease b. Increase c. Remain the same d. First decrease then increase
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41) AIDS virus is______________________ a. Single-stranded RNA b. Single-stranded DNA c. Double-stranded RNA d. Double-stranded DNA
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42) Which Vitamin gets destroyed on heating? a. B b. E c. K d. C
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43) Cow milk is a rich source of____________? a. vitamin C b. vitamin B c. vitamin A d. vitamin K
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44) Which of the following vitamins is synthesized in the body by intestinal bacteria_______? a. Vitamins B1 b. Vitamins B12 c. Vitamins E d. Vitamins K
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45) Mercury is also known as_________? a. Shine Silver b. Quick Silver c. Slow Silver d. Slippery Silver
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46) what kind of soil is treated with gypsum to make it suitable for cropping______? a. Alkaline b. Acidic c. Waterlogged d. Soil with excessive clay content
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47) Phobos is the natural satellite of which planet__________ ? a. Mars b. Venus c. Saturn d. Neptune
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48) Galvanised Iron sheets have a coating of____________ a. Tin b. Silver c. Zinc d. Chromium
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49) Spinach leaves are rich source of________ a. Amino acid b. Iron c. Vitamin E d. Carotene
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50) Which pollutant from motor car exhaust causes mental disease _____? a. Carbon dioxide b. Lead c. Sulpher Dioxide d. Mercury
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