Everyday Science MCQS Material, Gypsum, Platypus and Echidnas

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567. The main chemical substance present in the bones and teeth of animals is Calcium Phosphate.

568. The Green House Effect is caused by an excess of Carbon dioxide.

569. Bats can also fly in dark because they are capable of taking the help of Ultrasonic Waves.

570. Gold is found in its original form.

571. Green vegetables have high iron content.

572. The fat content in buffalo milk is 10%.

573. Whale has the largest egg.

574. The rear view mirror of a motor vehicle is Convex.

575. A post mortem study usually involves an analysis of liver.

576. Bio fertilizers are nitrogen-fixing micro-organisms which can enrich soil.

577. Tincture of iodine consists of a solution of iodine in alcohol.

578. The only planet of solar system which has water vapours is Neptune.

579. The major part of natural gas, petroleum and coal consist of Methane.

580. Gypsum is used for cement.

581. Chromium is obtained from Chromite.

582. Silica is used in glass-making.

583. Human population has become double during the last 45 years.

584. At present population growth rate in Pakistan is 1.573%.

585. In Pakistan, the nuclear power stations are built at Karachi and Chashma.

586. Plutonium is used as Fuel for nuclear fission.

587. Uranium-235 is used in the fission process.

588. The solar energy falling on the atmosphere of earth is almost 1.4 kilowatt per square meter.

589. The large plates of solar panels are painted Black.

590. The temperature of the semi-molten rocks about 10 km below the surface is 200 degree Centigrade.

591. Cataract is a disease of eye.

592. Rayon is made of Cellulose.

593. Meter per second is a unit of Velocity.

594. The greatest number of compounds is formed by the element of Carbon.

595. The major component of honey is Glucose.

596. The working principle of a washing machine is Centrifugation.

597. Oxygen is present in the largest amount in terms of per cent by mass in the earth’s crust.

598. Radioactivity was first discovered by Henry Becquerel.

599. Helium gas is commonly used in balloons and airships.

600. The process of elimination of water from any system is called Dehydration. 601. Sparkling red colour after the blast of fire cracker is due to the presence of Sulphur.

602. The chemical name of aspirin is Acetylsalicylic acid.

603. Animal fat has the highest calories per gram.

604 The commonly present element in the artificial fertilizer is Potassium, Nitrogen and Phosphorus.

605. Potassium nitrate is used in fertilizers.

606. The inherited traits of a person can be investigated by the study of Deoxyribonucleic acid.

607. Silicon is extensively used in electronics.

608. When a bullet is fired upwards vertically, it gains in Potential energy.

609. The mixture of Acetylene and oxygen gases is required in gas welding.

610. Isobars are the lines connecting the places having same Atmospheric pressure. 611. The velocity of wind is related to Pressure gradient.

612. The acid present in the sour milk is Formic acid.

613. The most important stimulant in tea leaves is Caffeine.

614. Dolly was the name of first cloned sheep.

615. The smallest living cell is that of a Mycoplasma (bacterium)

616. We lose consciousness if blood flow to the brain is cut off more than 5 sec. 617. Menopause usually occurs between 40 to 45 years.

618. Platypus and Echidnas are the only monotremes, or mammals that lay eggs. 619. Film is that part of camera which is analogue to the retina in the human eye. 620. 72-80 is the average adult pulse rate.

621. Magnetic resonance is the modern tool for imaging brain tumours.

622. The acid used in a car battery is sulphuric acid.

623. After drinking contaminated water, you would be most apt to develop symptoms of Typhoid fever.

624. In eye donation, Cornea of donor’s eye is utilized.

625. Alzheimer is a disease of Brain.

626. Cell was discovered by Robert Hooke.

627. A body is taken from Earth to Moon. Its weight will Decreases.

628. Brass is an alloy of Copper and Zinc.

629. Mineral essential for the coagulation of blood is Magnesium.

630. Milk is an example of Emulsion.

631. Iron is the most abundant transition metal.

632. Hydrometer is used to determine specific gravity of liquids.

633. Convex lenses are used for the correction of Long-sightedness (Hyperopia) 634. A transformer is used to Increase or decrease AC voltage.

635. The stones formed in human kidney consist mostly of Calcium oxalate.

636. Most of the explosions in mines occur due to the mixing of Methane with air. 637. A mobile phone sends and receives messages through Radio waves.

638. Fax machine receives the signal and give its output through the Printer.

639. The procedure of crushing the gallstone and kidney stone by laser is called Lithotripsy.

640. Laser is used to produce an image of one dimension.

641. Three dimensional image formed by laser is called Photograph.

642. The first laser ever used is Semiconductor laser.

643. Ordinary light spreads in all directions.

644. Optical fibres are the fine strands of Glass.

645. The satellites which revolve in such an orbit, so that they move with earth rotation are called Geo-stationary satellites.

646. The elements which emit radiations have atomic number greater than 82.

647. In a normal healthy body, the number of red cells or erythrocytes in each cubic millimetre of blood is 5.0 m.

648. The average life of a red blood cell in the body is about 120 days.

649. DNA is a class of nucleic acids.

650. Cellulose is a Carbohydrate.

651. After long periods of use, a gray spot develops on the inside of a bulb. This is because the tungsten filament evaporates and collects there.

652. Ice cubes are added to a glass of pure water and a glass of a pure alcohol. The ice would be Floating in alcohol and sinking in water.

653. Protein which renders a cell less susceptible to attack by viruses is called Chloromycetin. 654. The pigment involved in photosynthesis activity is called Chlorophyll.

655. The chemical part of the dye that absorbs light and produces colour is called photo chrome.

656. A nuclear reactor harnesses nuclear energy by Controlled chain reaction.

657. Eyes are tested by dilating the pupils with a very dilute solution of Atropine.

658. Phenol is used as a raw material in the manufacture of foam used in mattresses, cushions, etc.

659. ECG is an instrument used for the disorder of Heart.

660. Carbon-14 is used for dating very old objects of archaeological importance. 661. Lead is used in storage batteries.

662. Enzymes are Biological catalysts.

663. DNA finger-printing is the latest technology used in Forensic science.

664. Potassium is used in the preparation of glass and soap in the form of Carbonates.

665. Potassium phosphate is used in the preparation of detergent.

666. In Chlorophyll, magnesium is present.

667. Calcium plays a vital role in blood clotting.

668. For water purification, Chlorine is used

669. Deficiency of calcium causes the impaired growth in infants.

670. Wheat, rice, corn and maize are the best sources of carbohydrates.

671. The human blood is divided into four groups.

672. The muscles, tissues and blood all are made up of Proteins.

673. Iron is a part of hemoglobin which transports oxygen.

674. In thyroid glands iodine is required for the synthesis of Thyroxin.

675. The amount of calories provided by egg is 150 K calories/100gm.

676. Jupiter is the largest planet of solar system.

677. The mirror placed near the driver of a bus is Concave mirror.

678. X-rays are used to disintegrate bladder stones.

679. The percentage of carbohydrates in the normal daily food calorie requirement of an adult is about 59%.

680. Impure blood is received in the heart in the right auricle.

681. Plants take nitrogen in the form of Nitrate.

682. Washing soda in water behaves acidic.

683. The glad which maintains body temperature is the Pituitary gland.

684. Peeled banana under normal condition is brittle.

685. Phrenology deals with sensory perception of animals.

686. Vinegar is produced by two steps, first fermentation of sugar by yeast, second fermentation of ethyl alcohol by bacteria.

687. The longest and the strongest bone in the human body is Femur.

688. Red color has the longest wavelength and violet has the shortest wavelength. 689. Chronometer is used to measure Time.

690. Carbon dioxide is used in fire extinguishers.

691. Hereditary disorders are the result of Defective DNA nucleus.

692. Pure gold is 24 carat.

693. One horse power is equal to 746 watts.

694. Dynamo is a device that converts Mechanical energy into electrical energy. 695. The minimum velocity required to escape from the gravitational pull is 11.2 km/s.

696. Heavy water consists of Oxygen and heavy hydrogen.

697. Polio is a viral disease. 698. Ag is the symbol for silver.

699. Babbage is called the father of computer.

700. Dead red blood cells are stored in liver.

Oxygen 46.1%, 461,000

Silicon 28.2%, 282,000

Aluminum 8.23%, 82,300 Iron 5.63%, 56,300

Calcium 4.15%, 41,500

Sodium 2.36%, 23,600

Magnesium 2.33%, 23,300

Potassium 2.09%, 20,900

Titanium 0.565%, 5,650

Hydrogen 0.14%, 1,400

701. Spring tides occur on new moon and full moon days because on these days Sun, moon and earth are in a straight line.

702. Clayey soil is best suited for cotton.

703. The time interval between two beats of a normal human heart is 1 second. 704. The material used for bleaching paper pulp is Sodium hypochlorite.

705. Mercury has the smallest diameter.

706. The instrument, used for recording tremors of earth, is known as Seismograph. 707. Ionosphere makes the radio transmission possible.

708. Colour of the skin is due to the presence of Melanin.

709. Natural rubber is a protein.

710. Concave mirror can be used to focus sunlight.

711. Liver secrets bile.

712. When an object is transferred from the earth to the moon its mass remains unchanged.

713. The unit of sound is Decibel.

714. It is economical to transmit electric power at high voltage.

715. Diamond does not have a tetrahedral structure.

716. The unit to measure the supersonic speed is Mach.

717. The application of the principles of genetics to the improvement of human race is known as Eugenics.

718. The penetration of x-rays through an object depends upon the object’s Density.

719. Using Ultrasound, we can determine the Structure of the body.

720. The find the hidden secrets under the water, the ships and submarines use the Sonar system.

721. The dirt in the dirty water can be separated by using the Ultrasound.

722. Recording of brain waves from outer surface of head is called E.E.G (Electroencephalograph).

723. The first rocket launched by Pakistan was Rahber.

724. The first Nuclear power plant in Pakistan was established at Karachi.

725. Sodium benzoate is used for preservation of food grains.

726. Steel is more elastic than rubber because ratio of stress to strain is more.

727. Haemoglobin makes the blood look red.

728. Mercury is extracted from Cinnabar.

729. Cattle-bone powder is used as fertilizer as it is rich in Phosphorous.

730. Heating element of an electric heater Nichrome.

731. Dry sand appears bright while wet sand appears dark because of Reflection. 732. Acid rain contains high levels of Sulphuric acid.

733. A woman’s voice is shriller than a man’s due to smaller vocal chords.

734. The blood glucose level is commonly expressed as Milligram per decilitre.

735. Soft drinks such as colas contain significant quantities of Caffeine.

736. A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel absorbs moisture.

737. Fluorescent tubes are fitted with a choke. The choke coil reduces current in the circuit.

738. For reproduction of sound, a CD (Compact Device) audio player uses a Laser beam.

739. When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of Reflection and diffraction.

740. If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be Radioactive.

741. The total genetic material within an individual is known as the Genome.

742. The part of the body directly affected by Pneumonia is Respiratory system.

743. As the amount of clay in a soil increases, its water retaining capacity increases. 744. O blood group of human beings is a universal donor.

745. Amino acids are a product of the digestion of Protein.

746. Ptyalin is a starch digeting enzyme.

747. Pepsin, a digestive enzyme, is produced in the Stomach.

748. Milk is nearly a complete food by itself.

749. The acids turn the blue litmus paper Red.

750. Permanent magnets can be made from Cobalt.

751. Nights are cooler in the deserts than in the plants because Sand absorbs heat more quickly than the earth.

752. Atmospheric pressure exerted on the earth is due to the Gravitational pull. 753. Fertilizer having high nitrogen content is Urea.

754. Potassium Carbonate is used for removing air bubbles from the glass during its manufacture.

755. The chemical name for ―baking soda‖ is Sodium Bicarbonate.

756. The snow on the mountains does not melt all at once when it is heated by the sun because it reflects most of the heat from the sun.

757. First time AIDS was identified in 1983.

758. Anthrax is a bacterial disease.

759. Blood is formed in bone marrow in human body.

760. Quark is the smallest part of the matter discovered by the scientists.

761. Trachoma is a disease of the eye.

762. The heart of a normal adult human being weighs about 300 grams and that of woman 200 grams.

763. Heart pumps 5 litre blood per minute in a normal human adult (at resting position).

764. The part of the body directly affected by Rikets is bone tissue.

765. Histology is the study of tissues.