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MCQOPTIONS
This section includes 2268 Mcqs, each offering curated multiple-choice questions to sharpen your Grade7 knowledge and support exam preparation. Choose a topic below to get started.
| 1651. |
Elements may be classified as |
| A. | metals |
| B. | non metals |
| C. | metalloids |
| D. | both a and b |
| Answer» E. | |
| 1652. |
Sodium is found in periodic table on |
| A. | left side |
| B. | right side |
| C. | middle |
| D. | upside |
| Answer» B. right side | |
| 1653. |
The short form of "Polyvinyl chloride" is |
| A. | PVCl |
| B. | PViCl |
| C. | PVC |
| D. | PoViCl |
| Answer» D. PoViCl | |
| 1654. |
The shape of 'gas' is |
| A. | indefinite |
| B. | definite |
| C. | indescribable |
| D. | dependent on air humidity |
| Answer» B. definite | |
| 1655. |
The new form of 'polythene' is called |
| A. | polypropene |
| B. | polybutene |
| C. | high density polyethene |
| D. | low density polyethene |
| Answer» D. low density polyethene | |
| 1656. |
When methane is combusted, it combines with |
| A. | carbon dioxide |
| B. | oxygen |
| C. | hydrogen |
| D. | nitrogen |
| Answer» C. hydrogen | |
| 1657. |
The density of 'solids' is |
| A. | lower than liquids but higher than gases |
| B. | higher than liquids but lower than gases |
| C. | higher than both liquids and gases |
| D. | lower than both liquids and gases |
| Answer» D. lower than both liquids and gases | |
| 1658. |
'White blood' cells are made in |
| A. | liver |
| B. | bone marrow |
| C. | spleen |
| D. | blood |
| Answer» C. spleen | |
| 1659. |
The muscles of the atria and ventricles squeeze to |
| A. | move the blood |
| B. | make some space for blood |
| C. | make space for air |
| D. | build a vacuum |
| Answer» B. make some space for blood | |
| 1660. |
Carbon dioxide has to be taken from |
| A. | lungs to cells |
| B. | heart to liver |
| C. | lungs to liver |
| D. | cells to lungs |
| Answer» E. | |
| 1661. |
In blood the main task of red blood cells is to |
| A. | defend body from disease |
| B. | transport oxygen |
| C. | heal the wounds |
| D. | refresh the heart |
| Answer» C. heal the wounds | |
| 1662. |
In a body heat is transferred by blood from |
| A. | lungs to heart |
| B. | liver to heart |
| C. | liver to cells |
| D. | heart to cells |
| Answer» D. heart to cells | |
| 1663. |
The sun is a glowing ball of hot gases which rotates in |
| A. | space |
| B. | earth |
| C. | ovals |
| D. | circles |
| Answer» B. earth | |
| 1664. |
A telescope that uses a single or a combination of curved mirrors, is also called |
| A. | refracting telescopes |
| B. | reflector |
| C. | rarefaction telescope |
| D. | reflection telescope |
| Answer» C. rarefaction telescope | |
| 1665. |
Scientists says that there is no proof that astrology has been used for prediction of |
| A. | human behavior |
| B. | myths |
| C. | future |
| D. | life span |
| Answer» D. life span | |
| 1666. |
Small radio telescopes are used instead |
| A. | enormous dish aerial |
| B. | reflecting telescopes |
| C. | refracting telescopes |
| D. | small dish aerial telescopes |
| Answer» B. reflecting telescopes | |
| 1667. |
Waves travel through space at the speed of light i.e. |
| A. | 30,000 km/s |
| B. | 300,000 m/s |
| C. | 3,000 m/s |
| D. | 300,000 km/s |
| Answer» E. | |
| 1668. |
The beat inside the chest (under left rib) is due to |
| A. | huge blood vessels |
| B. | heart |
| C. | lungs |
| D. | bones |
| Answer» C. lungs | |
| 1669. |
The medium for blood cells to flow is |
| A. | tissue fluid |
| B. | plasma |
| C. | hemoglobin |
| D. | fibrinogen |
| Answer» C. hemoglobin | |
| 1670. |
Small cells that make a net on a wound are |
| A. | white blood cells |
| B. | platelets |
| C. | red blood cells |
| D. | antigens |
| Answer» C. red blood cells | |
| 1671. |
Atria and ventricles are connected by a |
| A. | vein |
| B. | artery |
| C. | capillary |
| D. | valve |
| Answer» E. | |
| 1672. |
A pacemaker is a group of cells in one of the chamber of heart. The chamber is |
| A. | right ventricle |
| B. | left ventricle |
| C. | right atrium |
| D. | left atrium |
| Answer» D. left atrium | |
| 1673. |
'Distillation' can also be used to treat |
| A. | fresh water |
| B. | sewage water |
| C. | polluted water |
| D. | rain water |
| Answer» D. rain water | |
| 1674. |
Water can be kept clean by detergents, if they are |
| A. | not poisonous |
| B. | odorless |
| C. | biodegradable |
| D. | non biodegradable |
| Answer» D. non biodegradable | |
| 1675. |
The population which does not have tap water in their homes, is |
| A. | two-third of the world population |
| B. | one-third of the world population |
| C. | half of the world population |
| D. | quarter of the world population |
| Answer» B. one-third of the world population | |
| 1676. |
Desalination plants are used to convert |
| A. | hot water to cold water |
| B. | cold water to hot water |
| C. | tasteless water to salty water |
| D. | salty water to tasteless water |
| Answer» E. | |
| 1677. |
In sewage treatment plants, large material is removed by |
| A. | metal screen |
| B. | grit tank |
| C. | sludge tank |
| D. | filter bed |
| Answer» B. grit tank | |
| 1678. |
By observing sunspots, scientists found that different parts of sun takes different lengths of time to |
| A. | blast |
| B. | cool down |
| C. | rotate |
| D. | heat up |
| Answer» D. heat up | |
| 1679. |
In the universe approximate number of galaxies is |
| A. | 100,000 thousands |
| B. | 100,000 millions |
| C. | 100,000 billions |
| D. | 100,000 trillions |
| Answer» C. 100,000 billions | |
| 1680. |
Earth sized white dwarf has a mass equal to that of |
| A. | Moon |
| B. | Sun |
| C. | Jupiter |
| D. | Saturn |
| Answer» C. Jupiter | |
| 1681. |
Sirius can be seen from |
| A. | mid southern latitude |
| B. | mid northern latitude |
| C. | equator |
| D. | south pole |
| Answer» C. equator | |
| 1682. |
In our galaxy, there are about |
| A. | 1000 stars |
| B. | 2000 stars |
| C. | 500,000 million stars |
| D. | 500 million stars |
| Answer» D. 500 million stars | |
| 1683. |
The materials that allow the electrons to flow through them is known as |
| A. | insulators |
| B. | conductors |
| C. | electrolytes |
| D. | bases |
| Answer» C. electrolytes | |
| 1684. |
Live wire is a wire which has |
| A. | current |
| B. | zero current |
| C. | has zero current but high voltage |
| D. | has high current but zero voltage |
| Answer» B. zero current | |
| 1685. |
To make work easy, scientists and electricians use |
| A. | circuit diagrams |
| B. | circuit organizers |
| C. | circuit breakers |
| D. | circuit arcs |
| Answer» B. circuit organizers | |
| 1686. |
Anything that slows down the flow of electricity in a circuit is known as |
| A. | current |
| B. | offensive power |
| C. | resistance |
| D. | high voltage |
| Answer» D. high voltage | |
| 1687. |
Good electrical conductors slow down the movement of |
| A. | electrons |
| B. | protons |
| C. | neutrons |
| D. | photons |
| Answer» B. protons | |
| 1688. |
The change in the strength of a magnetic field produces |
| A. | heat |
| B. | sounds |
| C. | light |
| D. | magnetism |
| Answer» C. light | |
| 1689. |
When water is electrolyzed, at anode collected gas is |
| A. | sulphur |
| B. | oxygen |
| C. | hydrogen |
| D. | sulphur dioxide |
| Answer» C. hydrogen | |
| 1690. |
The wires used by simple circuits are |
| A. | live and earth |
| B. | live and neutral |
| C. | live, neutral and earth |
| D. | live, neutral, earth, positive and negative |
| Answer» C. live, neutral and earth | |
| 1691. |
When William turned the switch on, the bar of iron became a |
| A. | magnet |
| B. | metal |
| C. | metalloid |
| D. | transition metal |
| Answer» B. metal | |
| 1692. |
An ammeter which is easy to read is |
| A. | analog |
| B. | digital |
| C. | hybrid |
| D. | mechanical |
| Answer» C. hybrid | |
| 1693. |
Ammonia is made by mixing two gases. These gases are |
| A. | nitrogen and hydrogen |
| B. | nitrogen and oxygen |
| C. | nitrogen and methane |
| D. | methane and oxygen |
| Answer» B. nitrogen and oxygen | |
| 1694. |
Mixing of iron and sulphur together brings |
| A. | chemical change |
| B. | physical change |
| C. | biological change |
| D. | organic change |
| Answer» C. biological change | |
| 1695. |
For combustion, the required gas is |
| A. | carbon dioxide |
| B. | nitrogen |
| C. | hydrogen |
| D. | oxygen |
| Answer» E. | |
| 1696. |
Two indefinite characteristics of gases are |
| A. | volume and surface area |
| B. | volume and mass |
| C. | surface area and mass |
| D. | volume and shape |
| Answer» E. | |
| 1697. |
The plastic industry began in |
| A. | 1707 |
| B. | 1808 |
| C. | 1909 |
| D. | 2002 |
| Answer» D. 2002 | |
| 1698. |
Preventive measure for flu is |
| A. | medical checkup |
| B. | vaccination |
| C. | injection |
| D. | nebulization |
| Answer» C. injection | |
| 1699. |
The 'air' that we breath, turns moist, by |
| A. | hair in nostrils |
| B. | blood capillaries in nostrils |
| C. | water in the nose |
| D. | mucus lining in nostrils |
| Answer» E. | |
| 1700. |
Due to carbon monoxide in cigarette, smoker feels |
| A. | tiredness and breathlessness |
| B. | anxiety |
| C. | stress |
| D. | sleepiness |
| Answer» B. anxiety | |