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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.
| 55851. |
Uses of baking power |
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Answer» ● baking soda is used as an antacid in medicines to remove acidity of the stomach.● baking soda is used in making baking powder. Making cakes , to remove acidityin stomach.???????????? It is used an antacid in medicine to remove acidity of the stomach. Making cakes |
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| 55852. |
Solutions of sample paper of science 2019 |
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Answer» lakhmir singh is best?? Arihant is good. |
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| 55853. |
What is double displacement explain |
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Answer» Thanks to my answer The chemical reaction in which the reacting molecules exchange their partener ions is called double displacement reaction In double displancement the ions of the compund displace each other.For example:-AgNo³ + NaCl ➡ AgCl + NaNo³ In Double displacement reaction a highly reactive element displaces a less reactive element. |
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| 55854. |
What is the difference between aerobic and anaerobic respiration? |
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Answer» 1.Aerobic respiration takes place in presence of oxygen whereas anaerobic respiration takes place in absence of oxygen.2. Aerobic respiration produces more energy as compared to anaerobic respiration.3. Aerobic respiration_CO2, H2O and energy is produced.Anaerobic respiration_ethanol or lactic acid+E Aerobic respiration is that which taken in the presence of oxygen and anerobic respiration is in the absence of oxygen |
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| 55855. |
What is difference between fusion and Fission |
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Answer» When two light nuclei combine to form heavy nucleus called fusion. Splitting up of uranium atom called fission. See in book of s Chand fully explained |
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| 55856. |
In magnesium ribbon oxygen is already present at the surface why we need oxygen to burn it |
| Answer» Because Mg ribbon have a layer of CO3. But O2 is reacting with Mg then MgO is produced. | |
| 55857. |
Difference between Catenation and tetra valency |
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Answer» Tetra valence means to share its 4 Valence electron to Form covalent carbon compounds Catenation means carbon has the ability to Form a long chain of hydrocarbon compounds and tetra valence means to share its 4 Valence electron to Form carbon compounds catenation means "self linking" and tetravalency means "four valence element"☺☺ |
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| 55858. |
Which is important element for the formation of the organic compounds |
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Answer» Carbon and hydrogen☺️☺️☺️☺️☺️???? Carbon Carbon and hydrogen Carbon |
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| 55859. |
How we can find valency? |
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Answer» If the electron present in the outermost shell are 1,2,3,4 then these numbers are the valency of that particular element if the number of electrons are more than 4 than we have to subtract it from 8 then we will get its valency.For examle:-Clorine - 2 , 8 , 7 Then we have to subtract 7 from 8 than we will get 1 as its valency. By looking at the electrons in outermost shell:) By k l m n shell By k l m n shell |
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| 55860. |
Where is the centre of curvature of concave mirror inside or outside |
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Answer» Inside outside Centre of the mirror |
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| 55861. |
Arihant sample papers i succeed is good or not. |
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| 55862. |
Ham seeds ko soil main gadhte hai phir bhi vo bacteria kyo nahi khate |
| Answer» Ghad ke dekh le vaise bui vo pahle plant banana suru hote h | |
| 55863. |
Describe the flow of blood through the heart of human being |
| Answer» For that just remember a simple flow chart Blood from body parts it goes to r8A through SVC & IVC and it pumps to r8V then through pulmonary artery it goes to lungs 4 purification ND purified blood is pumped to LA through pulmonary vein then to lv then pumped to all parts of the body through aortaRemember it in the form of flowchart which makes it easy... | |
| 55864. |
What is the difference between rbc an wbc |
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Answer» Thank u its rigth answer Rbc is red in colour and wbc is white in colour. The function of rbc is to transport oxygento every part of the body and the function of wbc is to fight against bacterias and infections. |
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| 55865. |
What are the limitations of a chemical equation? |
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| 55866. |
How I can find valency of trasition elements like copper ,zinc,magnese,nickle,coblalt etc? |
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| 55867. |
How to connect dynamo to a light |
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| 55868. |
Situated carbon burn with |
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Answer» Saturated carbon burns with yellow flame and unsaturated carbons burn with clean blue flameAs saturated have single bond they will burn with yellow flameAnd unsaturated have double bond or triple bond they will break easily so they will burn with clean blue flame Clean blue flame |
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| 55869. |
How can we duck abu |
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| 55870. |
How many % came in 8™ class .please gyes tell me |
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| 55871. |
What is the common method of asexual reproduction that produces highest number of individuals |
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Answer» It could be multiple fission also in which plasmodium divides rapidly and form many daughter cells Spore formation |
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| 55872. |
Give one example of a chemical reaction? |
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Answer» Combination reaction C + O2 = CO2 IS THE EXAMPLE OF CHEMICAL REACTIONS |
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| 55873. |
Explain Fleming Left hand rule. |
| Answer» Flemongs is where the thumb finger points out the force,fore finger points out magnetic force and middle finger points out direction pf current,in such a way that all these fingers are stretched out such tjat they are mutually perpendicular to each other. | |
| 55874. |
What is sporogenisis and gametogenesis process |
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| 55875. |
Give differences between mitosis and meiosis in 5 points |
| Answer» Mitosis\tInvolves one\xa0cell division\tResults in two daughter cells\tResults in\xa0diploid\xa0daughter\xa0cells\xa0(chromosome\xa0number remains the same as parent cell)\tDaughter cells are genetically identical\tOccurs in all organisms except viruses\tCreates all body cells (somatic) apart from the\xa0germ cells\xa0(eggs and sperm)\tProphase is much shorter\tNo recombination/crossing over occurs in prophase.\tIn metaphase individual chromosomes (pairs of chromatids) line up along the equator.\tDuring anaphase the sister chromatids are separated to opposite poles.Meiosis\tInvolves two successive cell divisions\tResults in four daughter cells\tResults in\xa0haploid\xa0daughter cells (chromosome number is halved from the parent cell)\tDaughter cells are genetically different\tOccurs only in animals, plants and fungi\tCreates germ cells (eggs and sperm) only\tProphase I takes much longer\tInvolves recombination/crossing over of chromosomes in prophase I\tIn metaphase I pairs of chromosomes line up along the equator.\tDuring anaphase I the sister chromatids move together to the same pole.\tDuring anaphase II the sister chromatids are separated to opposite poles. | |
| 55876. |
Why hot water is heavier than cold water |
| Answer» Hot water is lighter than the same volume of cold water, not heavier. The reason for the decrease in density as the temperature increases is that the water molecules cannot get so close together at higher temperatures. The molecules have more kinetic energy and take up more space as they move around in the liquid. | |
| 55877. |
Explain the law of inheritance |
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| 55878. |
How many type of reproduction |
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Answer» 2 Two type of reproduction1:- sexual reproduction2:- asexual reproduction |
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| 55879. |
Anybody is from Holly Garden Model School. |
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Answer» Murshidabad Yes i am |
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| 55880. |
What is relative index |
| Answer» Give the meaning of liberalism | |
| 55881. |
When make of sperm and last |
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Answer» Making of sperm start from the age of puberty in boys and it last till the death of the person but the quantity of making of sperm will decrease as the age will decrease Disgusting question What is the meaning of this question |
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| 55882. |
How many years found sperm in human |
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Answer» Pata nahi From the age of puberty to the death of person |
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| 55883. |
In re compartment science students paper with held 10 class exams |
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| 55884. |
What is traits? |
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Answer» The expression of characters like tallness, dwarfness etc.are called traits. Traits are the characters that the we have get from parents |
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| 55885. |
What are the Advantages of sexual reproduction? |
| Answer» In sexual reproduction exact copy and blue print of parent can give to the offspring and the variations that occur are important for the off spring | |
| 55886. |
\'All the minerals are the ores but all the ores are not the minerals\' explain. |
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| 55887. |
Ryiu |
| Answer» ????? | |
| 55888. |
ethanol is drinkable |
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Answer» But in very small quantity or it can be lethal(deadly) Yes |
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| 55889. |
What is meant by chemical basis of heredity |
| Answer» The genetic substance of all living creatures, from viruses to man is a complex chemical compound - the nucleic acid DNA (deoxyribonucleic acid). The instructions in DNA are transmitted by messenger RNA (ribonucleic acid). Chromosomes are made from DNA. | |
| 55890. |
What is self pollination |
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Answer» If pollen grains from the same flower or other flower of same plant are transferred to the stigma then it is called self pollination The transfer of pollen grains from anther(male reproductive part) of a flower to stigma(female reproductive part) of same flower or same plant is known as self pollination. The transfer of pollen grains from anther of a flower to the stigma of the same flower is known as self pollination |
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| 55891. |
Where is key noyes of this chapter |
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Answer» All the chapter Which chapter |
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| 55892. |
Why do stars twinkle at night? |
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Answer» The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction occurs in a medium of gradually changing refractive index. Due to atmospheric refraction stars are twinkle |
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| 55893. |
Differentiate between autrotophic & hetrotophic nutrition |
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Answer» \tAUTOTROPHIC NUTRITIONHETEROTROPHIC NUTRITION1) it means that the organism prepare its own food and is not dependent on any other organism.1) it means that the organism does not prepare its own food and dependent on other organism for food.2) food is prepared from co2 ,water,sunlight.2) food cannot be prepared from co2 ,water,sunlight.3) green plants and certain bacteria have autotrophic mode of nutrition.3) all the animals and fungi,most bacteria have heterotrophic mode of nutrition.\xa0\t Autotrophic:chlorophyll is required.(2)food is generally prepared during day time.Heterotrophic: Chlorophyll is not required.(2)food can be obtained at all time. |
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| 55894. |
How we can make chemical equation if we know the reactant (elements or compounds)? |
| Answer» By changing temperature | |
| 55895. |
What happen when Ethylene reacts with Baeyer\'s reagent. |
| Answer» 3C2H2 + 8KMnO4 = 3K2C2O4 + 8MnO2 + 2KOH + 2H2O | |
| 55896. |
What is the difference between ethanol and ethanoic acid? |
| Answer» Ethanol is C2H5OHAnd Ethanoic acid is CH3COOHEthanol does not reacts with NaHCO3 but ehanoic acid reacts with NaHCO3 | |
| 55897. |
What is the nature of oxides of metal? |
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Answer» Metal oxides arebasic in nature. Metal oxides are basic nature.Oxide word suggests bases Metal oxide is basic in nature beacuse metaloxide react with water to form hydraoxide in aqueous solution. Basic |
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| 55898. |
How sun is burning without air or oxygen in space |
| Answer» Sun is burning in presence of the hydrogen gas | |
| 55899. |
How will you differtiate between ethane and and ethene on basis of chemical properties |
| Answer» Ethane is saturated and ethene is unsaturated | |
| 55900. |
When we are feeling cold which part of our brain works |
| Answer» Mid brain works when we feel cold as the hypothalmus gets alerted and send us signals through our spinal cord making our body to shiver | |