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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.
| 1851. |
The building blocks of all matter including living and non living things are |
| A. | element |
| B. | compound |
| C. | mixture |
| D. | solution |
| Answer» B. compound | |
| 1852. |
The general properties of metals are |
| A. | shiny |
| B. | ductile |
| C. | malleable |
| D. | all of above |
| Answer» E. | |
| 1853. |
Iron sulfide is formed when iron and sulphur are together |
| A. | heated |
| B. | mixed |
| C. | dissolved in water |
| D. | evaporated |
| Answer» B. mixed | |
| 1854. |
The properties of compound, as compare to properties of its constituents are |
| A. | same |
| B. | different |
| C. | constant |
| D. | exact |
| Answer» C. constant | |
| 1855. |
A very light and inert gas is |
| A. | oxygen |
| B. | hydrogen |
| C. | helium |
| D. | neon |
| Answer» D. neon | |
| 1856. |
The reflection of light back to the medium again and again, is known as |
| A. | internal reflection |
| B. | critical reflection |
| C. | total internal reflection |
| D. | total critical reflection |
| Answer» D. total critical reflection | |
| 1857. |
Televisions and monitors use the effect of |
| A. | primary colors |
| B. | secondary colors |
| C. | tertiary colors |
| D. | special color |
| Answer» E. | |
| 1858. |
Focal length is a length which lies between |
| A. | lens and object |
| B. | lens and image |
| C. | lens and second focus |
| D. | lens and focal point |
| Answer» E. | |
| 1859. |
Rainbows are formed when sunlight reflects through |
| A. | fog |
| B. | millions of rain droplets |
| C. | clouds |
| D. | mist |
| Answer» C. clouds | |
| 1860. |
Ray of light is always refracted in |
| A. | indefinite direction |
| B. | definite direction |
| C. | definite position |
| D. | indefinite position |
| Answer» C. definite position | |
| 1861. |
The respiration that involves the presence of oxygen is known as |
| A. | aerobic respiration |
| B. | anaerobic respiration |
| C. | passive respiration |
| D. | active respiration |
| Answer» B. anaerobic respiration | |
| 1862. |
'Nicotine' is a drug which causes |
| A. | asthma |
| B. | dizziness |
| C. | cancer |
| D. | addiction |
| Answer» E. | |
| 1863. |
The scientific name for flu is |
| A. | influenza |
| B. | diarrhea |
| C. | pneumonia |
| D. | saptica |
| Answer» B. diarrhea | |
| 1864. |
The contraction of bronchi causes |
| A. | flu |
| B. | cough |
| C. | fever |
| D. | asthma |
| Answer» E. | |
| 1865. |
The most dangerous disease of respiratory system is |
| A. | asthma |
| B. | flu |
| C. | cold |
| D. | cough |
| Answer» B. flu | |
| 1866. |
Water can be separated from mud by the help of |
| A. | distillation |
| B. | filtration |
| C. | evaporation |
| D. | fractional distillation |
| Answer» C. evaporation | |
| 1867. |
A substance which is made by mixing two elements without being chemically combined is called a |
| A. | solute |
| B. | compound |
| C. | mixture |
| D. | solution |
| Answer» D. solution | |
| 1868. |
Breakdown or formation of compound involves |
| A. | chemical reaction |
| B. | heating |
| C. | passing electricity through |
| D. | all of above |
| Answer» E. | |
| 1869. |
The crystals of dry ice that keep things cold are a solid state of |
| A. | carbon dioxide |
| B. | oxygen |
| C. | helium |
| D. | nitrogen |
| Answer» B. oxygen | |
| 1870. |
Petroleum, gasoline, kerosene, diesel and paraffin wax are yielded to fractional distillation of |
| A. | mustard oil |
| B. | sunflower oil |
| C. | crude oil |
| D. | almond oil |
| Answer» D. almond oil | |
| 1871. |
The process of conversion of a solid state into liquid is called |
| A. | melting |
| B. | boiling |
| C. | freezing |
| D. | solidifying |
| Answer» B. boiling | |
| 1872. |
Widely spaced particles are found in |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | air |
| Answer» D. air | |
| 1873. |
The particles are closed together in a regular pattern in |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | water |
| Answer» B. liquid | |
| 1874. |
Who explained that the pollen grains were being moved by individual water molecules. |
| A. | Democritus |
| B. | Aristotle |
| C. | Robert brown |
| D. | Albert Einstein |
| Answer» E. | |
| 1875. |
The physical state of matter is changed with the change in |
| A. | temperature |
| B. | pressure |
| C. | light |
| D. | both a and b |
| Answer» D. both a and b | |
| 1876. |
Solar panels are orbiting above the earth about |
| A. | 600 meters high |
| B. | 1200 meters high |
| C. | 600 kilometers high |
| D. | 1200 kilometers high |
| Answer» D. 1200 kilometers high | |
| 1877. |
Sunspots are not always at the same place on the |
| A. | galaxy |
| B. | earth |
| C. | moon |
| D. | sun |
| Answer» E. | |
| 1878. |
A revolution of earth takes about |
| A. | a day |
| B. | an hour |
| C. | a year |
| D. | a month |
| Answer» D. a month | |
| 1879. |
The number of basic shapes of 'galaxies' is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 1880. |
Our atmosphere makes it very difficult to study |
| A. | Sun |
| B. | Moon |
| C. | Earth |
| D. | Jupiter |
| Answer» E. | |
| 1881. |
The rock concerts have sound level up to |
| A. | 80 dB |
| B. | 100 dB |
| C. | 120 dB |
| D. | 140 dB |
| Answer» E. | |
| 1882. |
A wave with ups and downs is known as |
| A. | transverse wave |
| B. | longitudinal wave |
| C. | latitudinal wave |
| D. | horizontal wave |
| Answer» B. longitudinal wave | |
| 1883. |
When air vibrates in a short thin tube, the level of note is |
| A. | low |
| B. | high |
| C. | high pitched |
| D. | low pitched |
| Answer» C. high pitched | |
| 1884. |
The number of things that effect the sound produced by vibrating strings is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 1885. |
The thing which also effects the sound produced by vibrating strings, is |
| A. | tension of strings |
| B. | mass of strings |
| C. | angle of strings |
| D. | material of strings |
| Answer» B. mass of strings | |
| 1886. |
The 'SI' unit of force is |
| A. | watt |
| B. | joule |
| C. | newton |
| D. | kilogram |
| Answer» D. kilogram | |
| 1887. |
Forces cancel each other's effect if their size is |
| A. | equal |
| B. | unequal |
| C. | same |
| D. | all of them |
| Answer» B. unequal | |
| 1888. |
The vibration of particles in solids at fixed position is due to |
| A. | kinetic energy |
| B. | potential energy |
| C. | force of attraction |
| D. | pressure on atoms |
| Answer» B. potential energy | |
| 1889. |
PVC sheets are also used to make |
| A. | umbrellas |
| B. | chimneys |
| C. | rain coats |
| D. | water proof bags |
| Answer» D. water proof bags | |
| 1890. |
When methane is combusted, it produces |
| A. | carbon dioxide and water |
| B. | carbon dioxide and hydrogen |
| C. | oxygen and hydrogen |
| D. | nitrogen and oxygen |
| Answer» B. carbon dioxide and hydrogen | |
| 1891. |
Burning hydrocarbons produce |
| A. | water |
| B. | carbon dioxide |
| C. | water and carbon |
| D. | water and carbon dioxide |
| Answer» E. | |
| 1892. |
In liquids the force of attraction between particles is |
| A. | weaker than gases |
| B. | stronger than gases but weaker than solids |
| C. | stronger than solids but weaker than gases |
| D. | stronger than solids and gases |
| Answer» C. stronger than solids but weaker than gases | |
| 1893. |
The stem is strong due to |
| A. | dead cells in the xylem |
| B. | living cells in the phloem |
| C. | fibers in the vessels |
| D. | hardness of the vascular bundles |
| Answer» D. hardness of the vascular bundles | |
| 1894. |
The main force that pulls water and dissolved mineral salts from the roots to the leaves is due to the process of |
| A. | translocation |
| B. | transpiration |
| C. | respiration |
| D. | photosynthesis |
| Answer» C. respiration | |
| 1895. |
'Xylem' vessels contain |
| A. | living cells |
| B. | dead cells |
| C. | arranged cells but dead |
| D. | disorganized cells but living |
| Answer» C. arranged cells but dead | |
| 1896. |
'Phloem' vessels contain |
| A. | living cells |
| B. | dead cells |
| C. | arranged but dead cells |
| D. | disorganized but living cells |
| Answer» B. dead cells | |
| 1897. |
Dissolved minerals and water is taken from roots to leaves by the vascular bundle named |
| A. | xylem |
| B. | phloem |
| C. | vein |
| D. | stem |
| Answer» B. phloem | |
| 1898. |
The melting of a metal with the help of ultrasounds is known as |
| A. | ultra welding |
| B. | ultrasonic welding |
| C. | ultrasound welding |
| D. | ultraviolet welding |
| Answer» C. ultrasound welding | |
| 1899. |
The full name of ultrasound is |
| A. | ultra high sounds |
| B. | ultra pitch sounds |
| C. | ultrasonic sounds |
| D. | ultraviolet sounds |
| Answer» D. ultraviolet sounds | |
| 1900. |
The louder the sound is, the more the amplitude it |
| A. | can |
| B. | will |
| C. | is |
| D. | has |
| Answer» C. is | |