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InterviewSolution
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.
| 68951. |
Copper ,iron,zinc , Magnesium which of these are two combination reaction |
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Answer» And metal oxides are always basic in nature . Combination reaction- it is a type of reaction in which two or more substitutes chemically combine together to form a single product . For example- Magnesium reacts with oxygen to give magnesium oxide . 2Mg+O2=2MgO |
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| 68952. |
Any1 needs help? |
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| 68953. |
MCQ question for ch-metals and non metals |
| Answer» Class 10 Science MCQs Chapter 3 Metals and Non-Metals1. Aluminium is used for making cooking uten¬sils. Which of the following properties of alu¬minium are responsible for the same?(i) Good thermal conductivity(ii) Good electrical conductivity(iii) Ductility(iv) High melting point(a) (i) and (ii)(b) (i) and (iii)(c) (ii) and (iii)(d) (i) and (iv)Answer2. The most abundant metal in the earth’s crust is(a) Iron(b) Aluminium(c) Calcium(d) SodiumAnswer3. The poorest conductor of heat among metals is(a) Lead(b) Mercury(c) Calcium(d) SodiumAnswerAnswer: a4. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?(a) Sonorousness(b) Malleability(c) Ductility(d) ConductivityAnswer5. Al2O3\xa0+ 2NaOH → …… + H2O(a) Al(OH)3(b) Na2O(c) NaAlO2(d) AlNaO2Answer6. Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity?Zinc, Iron, Magnesium, Sodium(a) Zinc > Iron > Magnesium > Sodium(b) Sodium > Magnesium > Iron > Zinc(c) Sodium > Zinc > Magnesium > Iron(d) Sodium > Magnesium > Zinc > IronAnswer7. Which of the following pairs will give dis-placement reactions?(a) FeSO4\xa0solution and Copper metal(b) AgNO3\xa0solution and Copper metal(c) CuSO4\xa0solution and Silver metal(d) NaCl solution and Copper metalAnswer8. Non-metals form covalent chlorides because(a) they can give electrons to chlorine(b) they can share electrons with chlorine(c) they can give electrons to chlorine atoms to form chloride ions(d) they cannot share electrons with chlorine atomsAnswer9. Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?(a) FeO(b) Fe2O3(c) Fe3O4(d) Fe2O3\xa0and Fe2O4Answer/ Explanation10. Which of tire following are not ionic compounds?(i) KCl(ii) HCl(iii) CCl4(iv) NaCl(a) (i) and (ii)(b) (ii) and (iii)(c) (iii) and (iv)(d) (i) and (iii)Answer11. The electronic configuration of three elements X, Y and Z are as follows:X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,(a) X2Y(b) YZ(c) XZ3 | |
| 68954. |
In each of the following situation what happens to the rate of photosynthesis ? |
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| 68955. |
Fullform of atp |
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Answer» Adenosine triphosphate Adenosine triphosphate Adenosine triphosphate Adenosine triphosphate Adenosine triphosphate |
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| 68956. |
How to easily remember the reactivity series?? |
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Answer» Kasi for k, nath for na , ka for ca , Maalik for mg , aaloo for Al , zara for zn , feeke for fe , pkata for pb , h for hydrogen First write 2 then 3 then 4 then Hydrogen then last four K. Na. Ca. Mg. Al. Zn. Fe. Sb. Pb. H. Cu. Hg. Ag. Au Please - K - potassiumStop - Na - sodiumCalling - Ca - CalciumMe. - Mg - MagnesiumA - Al - AluminiumZebra - Zn - ZincI - Fe - IronToo - Sn - TinLike - Pb - LeadHer - H - HydrogenCall. - Cu - CopperMe. - Hg - MercurySweat - Ag - SilverGoat - Au - Gold..Hope It\'s Helpful_ |
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| 68957. |
Define double circulation with diagram. |
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Answer» Double circulation means in one complete circulation of blood through body, it passes through heart twice. When blood goes through the heart 2 times to complete one cycle is called double circulation |
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| 68958. |
In Amoeba the digestion is intracellular because |
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Answer» Because it is unicellular Because it a single celled organism Digestion in amoeba is said to be intracellular because\xa0amoeba is a single celled organism, so the digestion takes place inside the cell. ... When the food enters its body, the amoeba forms a food vacuole around it which contains certain enzymes to digest the food. |
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| 68959. |
Difine the principal focus of a concave mirror |
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Answer» A number of rays falling on concave mirror after reflection they meet at a point called principal focus. H |
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| 68960. |
How can we know that why acid and bases are weak and strong |
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Answer» Saloni you are right ? With the use of pH paper or universal indicators This statement could be justified by the release of hydorhen ions jn aques soln by acids and bases. Acids amd bases nwhich produce more h² ions are strong. Amd those who produce less h2 are weak. Those acid and bases have completely ionised in aquous solution are strong acid or bases and those acid or base who does not ionised in (aq) solution are weak acid or base. |
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| 68961. |
Filtrate unit of kidne |
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Answer» In nephrons ultra filtration at glomerulus and selective reabsorption is in loop of henle ... Nephrons Nephron is the filtration unit of kidney. Nephron Nephron |
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| 68962. |
why should a magnesium ribbon clean before burning |
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Answer» To remove the coating of magnesium oxide Magnesium ribbon should be cleaned before burning in air because It reacts with atmospheric oxygen and forms magnesium oxide (MgO)layer which is very stable compound In order to prevent further reactions with oxygen, it is therefore necessary to clean the ribbon day to remove the layer MgO. To remove the oxidation layer Because magnesium is a very reactive element, it react with oxygen vigoursly and form a layer of magnesium oxide which is unable to burn, So we need to clean magnesium ribbon before burning Magnesium reacts with oxygen in the atmosphere and forms Magnesium Oxide. To prevent this it is cleaned with sand paper before reaction. |
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| 68963. |
What is motio |
| Answer» Rivise electricity chapter | |
| 68964. |
When a Ray of light enters a glass slab then |
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Answer» When a ray of light enters a glass slab then the ray bends towards normal and this phenomena is called refraction of light It shows refraction and bend towards normal |
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| 68965. |
Can i take a mobile phn with me |
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Answer» No No ? No |
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| 68966. |
what is the equation of plaster of paris ? |
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Answer» CaSO4. 1/2H2O Cuso4. 1/2 H2O CuSo4.1/2 H2O (Caso4)H2O CuSO4. 1/2 H2O |
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| 68967. |
How we know that a metal react with base or not |
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Answer» When metal reacts with a base then, salt and hydrogen gas are formed Firstly we find which is the metal and which is the base then go on reactivity series and find the sequence in which they occur if metal is before base then it will react and if it contradicts then will not |
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| 68968. |
Which colour bends the most |
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Answer» Voilet Violet Violet Voilet |
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| 68969. |
Term 2 honge ya nhi honge ????any suggestion ????‽‽¿ |
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Answer» Term 2 honge jldi hi bss intzaar kijiye ? Ya offcourse Archi Bisen term is complete A+B square Why are u thinking about that focus on term1 |
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| 68970. |
How was your science paper guys??? |
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Answer» Bahat achha gaya sach mee Tough Tough Yes It was little tuff? |
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| 68971. |
What are coxial lens |
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| 68972. |
What is nuecleus and cytoplasma |
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| 68973. |
Four properties of carbon that helps it form multiple bonds |
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| 68974. |
State the difference between the wire used in the elements of an electric heater and in a fuse wire |
| Answer» I need a girl friend | |
| 68975. |
Nichrome is used to make the elements of electric heater why? |
| Answer» It is bad conductor of heat and it is non- combusible | |
| 68976. |
Carbon and its compounds chapter answer |
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Answer» Carbon is an element which is non metal. It is present in atmosphere in the form of CO2. Carbon have 6 atomic number. In k shell filled 2 electrons and in L shell filled 4 electrons and for completing it\'s octet it makes covalent bond. What is carbon |
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| 68977. |
What is the yellowish thing appear on milk? |
| Answer» carotenoids | |
| 68978. |
What is significance of reproducation |
| Answer» Reproduction is necessary to have a continuity in our generation reproduction is necessary.If the process of reproduction doesnt take place our generation may extinct. | |
| 68979. |
How gygote form |
| Answer» When sperm and ovary add | |
| 68980. |
How can you locate a current carrying wire concealed in a wall |
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| 68981. |
Expression for parallel resistors in circuit |
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| 68982. |
Anyone clear me. How power is related to resistance? |
| Answer» P=v^2/R | |
| 68983. |
When new sample papers for class 10 term 2 science and maths be uploaded.. |
| Answer» It\'s already get uploaded | |
| 68984. |
https://t.me/onlyfansnightclub |
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| 68985. |
How many covalent bonds are present in C3H |
| Answer» How many covalent bonds are present in c3h | |
| 68986. |
Tissue culture???? |
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Answer» Making a completely new plant asexually by a cell or tissue . Tissue culture also called micropropagation, in which cells or tissue is isolated form the growing tip of the plant called \' explant \' . The explant grows into a undifferentiated mass of cells called callus in proper culture medium. Callus is then transferred to a medium containg hormones for growth and differniciation, that develops into plantlet, plantlets are then transplanted into pot or soil to form mature plants. Tissue culture ?? |
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| 68987. |
Name two a that are organism vegetative reproduction propagation? |
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Answer» Banana and Jaismen Potato , rose and orange |
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| 68988. |
Is the extinction of dinosaur due to the development of the capable species. What is your opinion |
| Answer» Yes ,as change is the major rule of nature. | |
| 68989. |
What is ohm? |
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Answer» Ohm is the SI unit of resistance Ohm is the unit used to represent resistance. |
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| 68990. |
Explain the nature of the covalent bond using the bond formation in ch3cl |
| Answer» Sej | |
| 68991. |
Incorrect DNA coping can alter the reproduction process. list the effect of such case. |
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Answer» Lead to disorders ,syndromes ,abnormalities in body When the cell divides into two,each cell gets a copy of each DNA of the chromosome along with the whole cellular apparatus.Complete accuracy in DNA copying leads to exactly identical cells but any error (incorrect) in duplication can lead to dissimilar cell or variations. The error in DNA copying must be at Max accuracy (slow).This error never being fast because this leads to too much error in DNA and the individual (offspring) didn\'t tolerate and die. Error in dna copying leads to variation in offspring, (i) .variation in human beings.(for example,our ancestors are like apes,when they reproduce there are some errors in their dna copying leads to variation in them to become human beings).(ii).Error in dna copying must be slow(small), if error in dna copying was fast(large) then child would not survive (more than 2 months) and die.(iii).Child is different from their parents (by apperance,by hair,by eye colour,etc.) that is why we all look differently,no one in this world look similar.(iv)if dna copying is 100% correct,then we all look similar.So, error in dna copying is good for us. Incorrect DNA copying can create variation in the offspring. It can lead the the embryo different from others |
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| 68992. |
What is mean by proton |
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Answer» Proton is a sub - atomic particle Positively charged substance of an atom is proton A proton(derived from Greek word \'proton\' meaning \'first\' ) is a positively charged mass containing subatomic particle present inside the nucleus of an atom. |
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| 68993. |
what is digestive system of human ,explain with diagram |
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| 68994. |
What is the significance of body design in determining the habitat of an organism |
| Answer» Body design/ morphology of an organism defines\xa0the way how much he is fitted or suitable for a specific habitat. E.g.- a bacteria doesn\'t need big houses or area to survive and also it\'s nutritional requirements are very less but humans, on the other hand, need much larger space and have complex nutrition system | |
| 68995. |
Who in class 10 |
| Answer» Me | |
| 68996. |
What is lamp black carbon? |
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Answer» I love ??? u janvi Ok What is your schoolname? Thakur ranjeet singh rajput001 Please follow me on Instagram |
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| 68997. |
Why losing electrons is high energy consumer? |
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| 68998. |
As a student how can we make people aware from STDs |
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| 68999. |
Explain Erthroblastosis Foetalis? |
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Answer» You are so intelligent. ?? What ? Its only 0.01percent of total.? Erythroblastosis fetalis is hemolytic anemia in the fetus (or neonate, as erythroblastosis neonatorum) caused by transplacental transmission of maternal antibodies to fetal red blood cells. The disorder usually results from incompatibility between maternal and fetal blood groups, often Rho(D) antigens. Itne questions ? |
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| 69000. |
What are proto-onco genes? |
| Answer» Proto-oncogenes are a group of genes that cause normal cells to become cancerous when they are mutated (Adamson, 1987; Weinstein & Joe, 2006). Mutations in proto-oncogenes are typically dominant in nature, and the mutated version of a proto-oncogene is called an oncogene. | |