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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 37051. |
Why are danger signals made rad in colour |
| Answer» | |
| 37052. |
What are the disadvantages of fossil fuels |
| Answer» The disadvantages of fossil fuels are as follows:\tBurning of fossil fuels produces oxides of carbon, nitrogen, sulphur, etc. that cause acid rain, which affects the soil fertility and cause water pollution.\tBurning of fossil fuels produce gases such as carbon dioxide that causes global warming.\tBurning of coal and petroleum cause air pollution due to the pollutants produced.\tThey are non-renewable source of energy.They are present in the limited amount.So It is necessary to conserve them for our future generation. | |
| 37053. |
Why we need regular cleaning of aquarium whereas ponds and lakes not require such activity |
| Answer» An aquarium is an artificial ecosystem and the organisms present in it are selective and maintained in a restricted environment. In the Aquarium the uneaten food as well as the waste generated by the fishes mixes with the water and is left untreated due to the lack of decomposers. The waste materials thus accumulate in the water making it toxic. Hence an aquarium has to be cleaned after regular intervals.On the other hand, a pond or a lake ecosystem is a natural ecosystem and the types of organism present in it is balanced. The waste produced in this ecosystem serves as the food material for the decomposers and is thus eliminated by them from ponds etc.This ensures a balance in the water body and keeps the water clean and thus does not require physical cleaning. | |
| 37054. |
Formation of bleaching powder. |
| Answer» As a mixture with lime and calcium chloride it is marked as a chlorine Powder or bleach powder for water treatment and as a bleaching agent | |
| 37055. |
Precipitation reactions. |
| Answer» Any reaction that produce a pricipitate is known as pricipitate | |
| 37056. |
Explain corrosion. |
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Answer» Corrosion is the deterioration of the metal due to its reaction with the environment. Green patches on copper, tarnishing of silver, rusting of iron are some examples. Corrosion is the process in which metal are eaten up gradually by the action of air, moisture etc |
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| 37057. |
Why is respirationconsider as an exothermic reaction. |
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Answer» Out Because in this heat is given oit |
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| 37058. |
Why earth has round |
| Answer» | |
| 37059. |
What is thylakoid |
| Answer» | |
| 37060. |
Wath is ions |
| Answer» Durin a ionic bond the charge cerried away by an atom is called an ionIons are of two types Positively charged are called cationNegatively charged are called anion | |
| 37061. |
Prevention and control of communicable disease |
| Answer» | |
| 37062. |
Y all acids doesn\'t conduct electricity? |
| Answer» Because not every acid give hydrogen ions+ in its aqueous solution .. The acids which give hydrogen ions in its aqueous solution are conduct electricity while others do not. | |
| 37063. |
In a food chain of frog grass insect and snake assign tropic level of frog |
| Answer» 1 grass 2 insect 3 frog 4 snake so...trophic level of frog is 3rd trophic level which means it is a secondary consumers | |
| 37064. |
Why the stars get twinkle |
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Answer» Becz of atmospheric refraction Stars (except for the Sun) appear as tiny dots in the sky; as their light travels through the many layers of the Earth\'s atmosphere, the light of the star is bent (refracted) many times and in random directions (light is bent when it hits a change in density - like a pocket of cold air or hot air). This random refraction results in the star winking out (it looks as though the star moves a bit, and our eye interprets this as twinkling). |
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| 37065. |
Why & how our heart? make sounds. |
| Answer» Dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak dhak. | |
| 37066. |
How do plants utilise CO2 produced during respiration |
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| 37067. |
What is Snell\'s law of refraction? |
| Answer» | |
| 37068. |
Two carbon compounds A and B have a molecular formula c3h8 and c3H6 |
| Answer» C3H6 is a molecular formula | |
| 37069. |
How DNA are synthesis |
| Answer» | |
| 37070. |
Can tubectomy and vasectomy prevent STD (sexually transmitted disease) |
| Answer» | |
| 37071. |
Why star twinkle? |
| Answer» | |
| 37072. |
Are the eggs that we get in the stores are fertilised or unfertilised |
| Answer» May be unfertilised | |
| 37073. |
A concave mirror produces a magnification of +4. What is the position of object? |
| Answer» | |
| 37074. |
What is reproductive systems |
| Answer» The reproductive system is a system of *** organ within an organism which work together for the purpose of sexual reproduction | |
| 37075. |
How is the small intestine designed to absorb digested food? |
| Answer» In small intestine the small projections villi are present which help small intestine to digest food. | |
| 37076. |
What is valency of lead |
| Answer» | |
| 37077. |
Why red colour is seen above than the violet color? |
| Answer» It has maximun wavelength.therefore it goes minimum deviation. | |
| 37078. |
Social science |
| Answer» | |
| 37079. |
what happens when white light ray passes through two successive prism kept opposite to each other |
| Answer» | |
| 37080. |
What is sounds |
| Answer» It is atype of energy which produce us sensation of hearing sound | |
| 37081. |
What is radius of curvature |
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Answer» It is Iris half of focal length. f=R/2 Radius of curvature is the radius of sphere of which the mirror is a part. |
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| 37082. |
Diagram of electric generator and motor |
| Answer» | |
| 37083. |
What are transition elements |
| Answer» | |
| 37084. |
What are dominant characters and how they express themselves |
| Answer» | |
| 37085. |
Electron dot structure of ethanoic acid |
| Answer» | |
| 37086. |
Write one equation for decomposition where and its applied in the form of light |
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Answer» Silver chloride turns grey in sunlight this is due to the decomposition of siver chloride into silver and chlorine by light 2AgCl➡2Ag+Cl2 |
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| 37087. |
Why does the colour of copper sulphate solution change when an iron nail is dipped in it |
| Answer» | |
| 37088. |
S+ NaOH+H2O------PH3 +3NaH2PO2 balance it |
| Answer» | |
| 37089. |
What does the high level of total coliform count in river ganga indicate |
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Answer» Because An deasies like micro organism occurs in it n makes water dirty That is is contaminated |
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| 37090. |
Why there is no pain when we cut our hairs and nails? |
| Answer» Dead cells present in our nail and hair | |
| 37091. |
Diff. Between pepsin and trypsin |
| Answer» Pepsin digests protein in acidic medium whereas trypsin digest proteins in alkaline medium | |
| 37092. |
Differentiate between challenge of expansion and challenge of Deeping of democracy |
| Answer» | |
| 37093. |
An electric bulb is connected 220v generator.The current is 0.5A .what is the power of the bulb |
| Answer» P = V.I = 220 × 0.5 = 110 W | |
| 37094. |
Is cuso4 detergent or not ? Why? |
| Answer» | |
| 37095. |
Hello guys. ??????? |
| Answer» | |
| 37096. |
State parts of fore brain,hind brain and hind brain with their functions. |
| Answer» | |
| 37097. |
What is tropmovement aur nastimovment in plants |
| Answer» | |
| 37098. |
Explain mendels law of inheritance |
| Answer» | |
| 37099. |
Which mirror is converging mirror?Which lens is converging lens? |
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Answer» Diverging the concave lens . Converging the convex lens ?????very easy Convex lens and concave mirror |
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| 37100. |
Suggest five ways of use of forest resources which are both economically and developmentally sound |
| Answer» 1. Forest departament 2. Local people3. Indistarlist4. Activists | |