FEDERAL PUBLIC SERVICE COMMISSION COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS IN BPS-17. (CSS Past Papers Solved MCQs – Year 2016 to 2020)
GENERAL SCIENCE & ABILITY MCQs CSS 2016 (SET#1, 20 MCQs )
Select the best option/answer & fill in the appropriate Box on the Answer Sheets:
Which one of the following does not vary predictability with the aquatic environment?
(a) Salinity
(b) Temperature
(c) Penetration by sunlight
(d) None of these
Correct answer(a)
The ozone layer protects the earth from__________ sent by sun.
(a) Ultraviolet rays
(b) Infrared rays
(c) Gamma rays
(d) Radioactive rays
Correct answer(a)
The ozone layer is present in the atmosphere above the earth. The layer (Stratum) of the atmosphere in which the ozone layer lies is called.
(a) Exosphere
(b) Mesosphere
(c) Stratosphere
(d) Ionosphere
Correct answer(c)
One of the main functions of the earth’s ozone layer is to:
(a) Prevent global warming
(b) Filter out ultraviolet rays
(c) Absorb Pollution
(d) All of the Above
Correct answer(b)
The Pakistani population receives the largest dose of ionizing radiation from:
(a) Nuclear sources
(b) Nuclear medicine
(c) Fallout from nuclear weapon testing
(d) Nuclear powerplants
Correct answer(a)
Which are air pollutants?
(a) Aerosols
(b) Sewage
(c) DDT
(d) Fertilizers
Correct answer(a)
Which one of the following does not cause soil erosion?
(a) Wind
(b) Overgrazing
(c) Sun
(d) Water
Correct answer(c)
The gas associated with global warming is:
(a) CO2
(b) H2 S
(c) CH4
(d) SO2
Correct answer(a)
In water pollution, industries are said to be:
(a) Line sources
(b) Point sources
(c) Area sources
(d) None of these
Correct answer(a)
Among the following the only secondary pollutant is:
(a) Sulphur peroxide
(b) Ozone
(c) Sulphur Dioxide (SO2)
(d) None of these
Correct answer(b)
Which one of the following group of plants can be used as indicators as SO pollution in the air?
(a) Epiphytic lichens
(b) Ferns
(c) Liverworts
(d) Hornworts
Correct answer(a)
Prevailing winds effect the region’s climate by:
(a) Creating desert areas
(b) Causing precipitation on one side of the mountain
(c) Affecting how much precipitation it receives
(d) Controlling the amount of solar energy, it receives
Correct answer(c)
Carbohydrate content in potato (per 100g) is:
(a) 18g
(b) 13g
(c) 25g
(d) 26g
Correct answer(b)
Which refrigerant is commonly used as cold storage in our country?
(a) Ethylene
(b) Liquid Ammonia
(c) Carbide
(d) Sodium Benzoate
Correct answer(b)
Those at greatest risk of food-borne illness include:
(a) Infants & children
(b) Pregnant women
(c) Immuno-suppressed individuals
(d) All of the above
Correct answer(d)
One of the following is water-soluble vitamin
(a) Vitamin A
(b) Vitamin D
(c) Vitamin K
(d) None of these
Correct answer(d)
Mango variety having strong flavor is:
(a) Sindhri
(b) Chaunsa
(c) Langra
(d) Fazli
Correct answer(c)
Proteins are made up of:
(a) Polynucleotide
(b) Polypeptide
(c) Oxyacetylene
(d) None of these
Correct answer(b)
Pineapple variety suitable for canning is:
(a) Queen
(b) Kew
(c) Mauritius
(d) Cayenne
Correct answer(b)
Richest source of Riboflavin is:
(a) Papaya
(b) Mango
(c) Bael
(d) karonda
Correct answer(c)
The gas used in the artificial ripening of green fruit is:
(a) Ethylene
(b) Ethane
(c) CO 2
(d) Acetylene
Correct answer(a)
Which is the closest planet to earth?
(a) Mars
(b) Venus
(c) Mercury
(d) None of these
Correct answer(b)
Sulphuric acid was prepared by:
(a) Glauber
(b) Jabber Bin Hayyan
(c) Peregrine Phillips
(d) None of these
Correct answer(b)
The name of the disease called Lockjaw is:
(a) Arthritis
(b) Hypertropia
(c) Tetanus
(d) None of these
Correct answer(c)
The longest and largest bone in the human body is:
(a) Spinal Cord
(b) Humerus
(c) Fibula
(d) Femur
Correct answer(d)
The branch of Physics that deals with Atomic Nuclei is called:
(a) Nuclear Physics
(b) Atomic Physics
(c) Particle Physics
(d) Modern Physics
Correct answer(a)
Sonar is used to measure:
(a) The speed of sound
(b) Ocean depth
(c) Water properties of temperature
(d) None of these
Correct answer(b)
Stone used in Whitewash is:
(a) Claystone
(b) Stone lime
(c) Sandstone
(d) None of these
Correct answer(b)
Radar receives waves called:
(a) Electromagnetic waves
(b) Mechanical waves
(c) Radio waves
(d) None of these
Correct answer(c)
Plaster of Paris is obtained from:
(a) Brochantite
(b) Gypsum
(c) Chalcanthite
(d) None of these
Correct answer(b)
Phosphorus helps plant growth of:
(a) Leaves
(b) Seeds
(c) Root
(d) None of these
Correct answer(c)
The blue color of the sky is due to:
(a) Rayleigh scattering
(b) Sky saturation
(c) Mie scattering
(d) None of these
Correct answer(a)
Newspaper can recycle:
(a) 5 to 7 times
(b) 5 times
(c) 4 times
(d) None of these
Correct answer(a)
Blood Clotting happens in which part of the body?
(a) Veins
(b) Heart
(c) Brain
(d) None of these
Correct answer(a)
Lens used to correct shortsightedness:
(a) Concave polygon
(b) Concave
(c) Concave mirror
(d) None of these
Correct answer(b)
Catalyst to convert oil into ghee?
(a) Nickel
(b) Potassium borate
(c) Aluminum isoprenoid
(d) None of these
Correct answer(a)
Conversion of oil into ghee:
(a) Crystallization
(b) Hydrogenation
(c) Oxidation
(d) None of these
Correct answer(b)
In a certain code language COMPUTER is written as RFUVQNPC. How will medicine be written in code language?
(a) MFEDJJOE
(b) EOJDEJFM
(c) MFEJDJOE
(d) EOJDGEFM
Correct answer(d)
A told B that C is his father’s nephew. D is A’s cousin but not the brother of C. What relationship is there b/w D & C?
(a) Father
(b) Brother & Sister
(c) Mother
(d) Aunt
Correct answer(b)
It takes Ali 30 minutes to mark a paper. Aslam only needs 25 minutes to mark a paper. If they both start marking paper at 11:00 AM, at what time they will finish marking at the same time:
(a) 12:30
(b) 12:45
(c) 1:30
(d) 12:25
Correct answer(c)
The astronomical unit of light-year is used for:
(a) Distance
(b) Time Period
(c) Light Intensity
(d) Time
(e) None of these
Correct answer(a)
The use of antibiotics is a very effective way of killing disease-causing bacteria, sometimes people don’t finish all of their pills. This can result in:
(a) Some bacteria left unkilled
(b) Production of more bacteria
(c) Bacteria becomes sensitive to antibiotics
(d) Bacteria become resistant to antibiotics
Correct answer(d)
Proteins are made up of:
(a) Polynucleotide
(b) Oxyacetylene
(c) Polypeptide
(d) None of these
Correct answer(b)
The principle used in radar is same as that of sonar. In radar we use radio waves, in case of sonar we use:
(a) Red waves
(b) Infrared waves
(c) Ultrasonic
(d) Supersonic
Correct answer(c)
How dengue fever is transmitted?
(a) Bite of an infected mosquito
(b) Bite of an infected male Ades mosquito
(c) Bite of an infected female Anopheles mosquito
(d) Bite of an infected female Ades mosquito
Correct answer(d)
The sky is blue because of:
(a) Rayleigh Scattering
(b) Mie Scattering
(c) Refraction
(d) Reflection
(e) Absorption
Correct answer(a)
Cyclones:
(a) Experience Coriolis effects that deflect air to the right in the Southern Hemisphere
(b) Are associated with Super geostrophic winds
(c) Are typically regions of fair weather?
(d) Are associated with Low pressure systems
Correct answer(d)
Rainbow formation is due to:
(a) Absorption of sunlight by water droplets
(b) Diffusion of sunlight through water droplets
(c) Ionization of water droplets
(d) Refraction & Reflection of sunlight by water droplets
Correct answer(d)
Layer of atmosphere in which ozone layer lies is:
(a) Exosphere
(b) Mesosphere
(c) Troposphere
(d) Stratosphere
Correct answer(d)
Which distance is bigger- an astronomical Unit (AU) or light year (LY)?
(a) An astronomical unit (AUJ)
(b) Neither one is the measurement of distance
(c) They are both about same distance
(d) A light-year (LY)
Correct answer(d)
Rotation in which earth rotates in the form of:
(a) West to East
(b) East to West
(c) North to South
(d) South to North
Correct answer (a)
Collection of water droplets which are suspended in air called:
(a) Wind
(b) Cloud
(c) Gases
(d) Sleet
Correct answer (b)
How many calories you should eat to reduce weight?
(a) 2000
(b) 2500
(c) 1500
(d) 3000
Correct answer (c)
Time interval to complete one revolution of earth around its own axis is:
(a) 22 hours
(b) 23 hours
(c) 24 hours
(d) 23 hours & 56 minutes
Correct answer (d)
Enzymes in human bodies are:
(a) Protein
(b) Virus
(c) Bacteria
(d) None of these
Correct answer (a)
Antibiotics are used to fight against:
(a) Pathogens
(b) Virus
(c) Bacteria
(d) Proteins
Correct answer(c)
Radio waves broadcasted been back by:
(a) Ionosphere
(b) Stratosphere
(c) Mesosphere
(d) None of these
Correct answer (a)
During combustion of petrol in car engine, energy is converted in:
(a) Chemical
(b) Mechanical
(c) Electrical
(d) None of these
Correct answer (b)
Barometer is used for measuring:
(a) Temperature
(b) Humidity
(c) Pressure
(d) None of these
Correct answer(c)
Ionic bond is between two atoms is:
(a) Complete transfer of Valence Electron
(b) Half transfer of Valence Electron
(c) Complete transfer of electron & proton
(d) None of these
Correct answer (a)
Permanent hardness of water is due to:
(a) Sodium Bicarbonate
(b) Calcium Sulphate
(c) Calcium bicarbonate
(d) None of these
Correct answer (b)
How many bones are there in the human body?
(a) 204
(b) 205
(c) 206
(d) 208
Correct answer (c)
Which vessel provides blood to liver?
(a) Hepatic portal artery
(b) Veins
(c) Arteries
(d) None of these
Correct answer(a)
Which is not included in the earth’s environment?
(a) Lithosphere
(b) Stratosphere
(c) Biosphere
(d) None of these
Correct answer(d)
Which control rods are used in nuclear reactors?
(a) Cadmium
(b) Copper
(c) Graphite
(d) None of these
Correct answer (a)
Which country lies on the equator?
(a) Kenya
(b) China
(c) Bhutan
(d) San Salvador
Correct answer (a)
What is Anthracite?
(a) Carbon
(b) Pure Carbon
(c) Ammonia
(d) None of these
Correct answer (b)
How many bits are required to store hexadecimal word AF?
(a) 2 bits
(b) 4 bits
(c) 8 bits
(d) 12 bits
Correct answer (c)
What is the pre-released software version?
(a) Beta
(b) Alpha
(c) Gamma
(d) None of these
Correct answer (a)
What organelles do plant cells have?
(a) Cell walls
(b) Vacuoles
(c) Cell walls & vacuoles
(d) None of these
Correct answer (c)
What is the protein metabolism waste in humans?
(a) Urea
(b) Ammonia
(c) Magnesium
(d) None of these
Correct answer (a)
Light year is unit of:
(a) Distance
(b) Light
(c) Depth
(d) None of these
Correct answer (a)
The macronutrients of plants:
(a) Nitrogen
(b) Potassium
(c) Phosphorus
(d) All of these
Correct answer (d)
Atomic number is also called:
(a) Proton number
(b) Electron number
(c) Both of these
(d) None of these
Correct answer (a)
Blood contains:
(a) Red blood cells
(b) White blood cells
(c) Platelets
(d) All of these
Correct answer (d)
Which is example of warm-blooded animal?
(a) Reptiles
(b) Dolphin
(c) Frog
(d) None of these
Correct answer (b)
H+ is yielded by:
(a) Acids
(b) Alkalis
(c) Both of these
(d) None of these
Correct answer (a)
What is said to be the unavailability of system thermal energy for conversion into mechanical work?
(a) Thermodynamic
(b) Entropy
(c) Negentropy
(d) None of these
Correct answer (b)
Bronze medal is made up of metals:
(a) Copper, nickel
(b) Copper, tin
(c) Copper, silver
(d) Copper, zinc
Correct answer (b)
The loudness of sound depends on its:
(a) Wavelength
(b) Frequency
(c) Amplitude
(d) All of these
Correct answer (c)
The shape of our Milky way galaxy is:
(a) Spiral
(b) Elliptical
(c) Lenticular
(d) None of these
Correct answer: (a)
Humidity is measured by:
(a) Polarimeter
(b) Hygrometer
(c) Hydrometer
(d) None of these
Correct answer: (b)
Electromagnetic radiation is higher energy than visible radiation in:
(a) Infrared rays
(b) Microwave rays
(c) X-rays
(d) None of these
Correct answer: (c)
Bond of H2O is:
(a) Ionic
(b) Metallic
(c) Non-polar covalent
(d) Polar covalent
Correct answer: (d)
Which of the following is P-type semiconductor?
(a) Germanium
(b) Gallium
(c) Silicon
(d) None of these
Correct answer: (b)
In which atmosphere layer the temperature is about -900 C?
(a) Mesosphere
(b)troposphere
(c) thermosphere
(d) stratosphere
Correct answer: (a)
Which of the following is non-sedimentary rock?
(a) Limestone
(b) Sandstone
(c) Granite
(d) None of these
Correct answer: (d)
Greenhouse gases absorb the:
(a) Infrared radiation
(b) Ultraviolet radiation
(c) Visible radiation
(d) None of these
Correct answer: (a)
______________ is viral waterborne disease.
(a) Typhoid
(b) Cholera
(c) Hepatitis A
(d) None of these
Correct answer: (b)
The current recommended limit of arsenic in drinking water by World Health Organization is:
(a) 10 µg/
(b) 100 µg/L
(c) 200 µg/L
(d) None of these
Correct answer: (a)
Which of the following is not a basic step in creating a worksheet?
(a) Copy of the worksheet
(b) Save workbook
(c) Modify the worksheets
(d) None of these
Correct answer: (a)
Set of programs which consist of full set of documentation is termed as:
(a) Database
(b) File
(c) Software package
(d) Software
Correct answer: (c)
____________ is the primary consideration in designing knowledge-based AI systems.
(a) Analogy
(b) Efficacy
(c) Efficiency
(d) None of these
Correct answer: (c)
Size of MAC address in computer network is:
(a) 16 bits
(b) 32 bits
(c) 48 bits
(d) None of these
Correct answer: (c)
What is non-reducing sugar?
(a) Maltose
(b) Sucrose
(c) Glucose
(d) None of these
Correct answer: (b)
Which of the following is unsaturated fat?
(a) Cheese
(b) Butter
(c) Vegetable oil
(d) None of these
Correct answer: (c)
Which vitamin is known as ‘Blood clotting vitamin’?
(a) A
(b) C
(c) K
(d) None of these
Correct answer: (c)
Planets between earth and sun are:
(a) Mercury and Mars
(b) Venus and Mars
(c) Mercury and Venus
(d) None of these
Correct answer: (c)
Aedes aegypti transmits:
(a) Malaria
(b) Dengue fever
(c) Typhoid fever
(d) None of these
Correct answer: (b)
Which organelle is called the powerhouse of the cell?
(a) Mitochondria
(b) Ribosome
(c) Plastids
(d) None of these
Correct answer: (a)