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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.
| 1901. |
Which metal is displaced from the salt solution during the reaction of salt solution and a metal? |
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Answer» Displacement reactions are easily seen when a SALT of the LESS reactive METAL is in the solution. During the reaction: the more reactive metal GRADUALLY disappears as it forms a solution. |
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| 1902. |
Is eartquake a fast change or slow change |
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Answer» Answer: Earth changes in its own natural ways. Some changes are DUE to SLOW processes, such as EROSION and weathering, and some changes are due to RAPID processes, such as landslides, volcanic ERUPTIONS, Tsunamis and earthquakes. |
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| 1903. |
To purchase seeds ,a farmer borrowed some money from a bank ,He cleared his debts by paying 4720 at the end of one and a half year .if thebamk charges interest at 12% per annum ,Find the cost of the seeds |
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Answer» Answer is in 2 parts Explanation: To purchase seeds ,a farmer borrowed some money from a bank ,He cleared his debts by paying 4720 at the end of ONE and a half year .if thebamk charges interest at 12% per annum ,Find the cost of the seeds A = Rs 4720 R = 12% p. a T = 1 ½ years = 3/2 years Recall the formula, A = P[1 + (TR/100)] = 4720[ 1 + (3 × 12)/200] = 6419.20 Hence the cost of the cow is Rs 6419.20 |
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| 1904. |
What are the missing elements 118 117 |
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Answer» TENNESSINE and OGANESSON are MISSING ELEMENTS |
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| 1905. |
What are the 10 elements of metalloids |
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Answer» boron silicon geranium arsenic antimony tilerium polonium |
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| 1908. |
Q. 27. Calamine solution is applied on the skin when an ant bites because a)its nature is acidic and so a neutralisation reaction brings relief b)it is calcium hydroxide which is a base and so effect of acid can be neutralised by the solution c)effect of base can be neutralised by this solution d)effect of formic acid can be neutralised by this solution |
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Answer» HI mate a) MAKE me brainlist please |
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| 1910. |
Draw an atomic model of chlorine .... |
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Answer» here is your diagram Explanation: |
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| 1911. |
Write the Formule using monovalent cations and monovalent anions |
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Answer» Answer: 5.5.2 FLUORESCENCE of TNS and ANS in Supramolecufar Systems As a monovalent anion in aqueous systems, TNS (or ANS) is expected to fluoresce WEAKLY in the presence of those supramolecular species with NEGATIVE outer surface charges. The surface would repel the anionic probe to more aqueous regions where the quantum YIELD of fluorescence is low. TNS fluorescence levels would be significantly enhanced in the presence of supramolecular surfaces with a positive charge, for electrostatic repulsions would no longer repel the TNS probe. Hydrophobic interactions between TNS and the surfactant [92] would LOCATE TNS in a more water-restricted environment and enhance the fluorescence quantum yield. Explanation: I hope it's helpful for you please mark in brain list |
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| 1912. |
(6) 2 kg of or fuel is burnt to prochuce 45,000kole, og snergije wcalorlate the valorific vahicof the fuel.Page No |
Answer» CALORIFIC value =HEAT produced/weight of FUEL used in KGGiven,Heat produced=45000kjWeight of fuel burnt=2kgTherefore,Calorific value of the heat=45000kj/2kg=> 22500 kj/kg |
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| 1913. |
132 g of carbon dioxide contains 96g of oxygen. calculate percentage composition of carbon in it |
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Answer» Answer: 621 Gm is the RIGHT answer please follow and than thanks myall ANSWERS please please please please please please and MARK as brilliant |
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| 1914. |
3. Write the uses of plants of grass1. How do fungi obtain their food? |
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Answer» Fungi, like animals do not carry out photosynthesis. Unlike animals, fungi do not ingest (take into their bodies) their food. Fungi release digestive enzymes into their food and DIGEST it externally. They absorb the food MOLECULES that result from the EXTERNAL digestion. I hope it will help you (•‿•) |
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| 1916. |
The male reproductive part of a flower is |
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Answer» MALE REPRODUCTIVE PART is Stamen Explanation: |
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| 1917. |
Some metals often lose their shine and dull because of the action of the?? |
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Answer» Explanation: Some metals often lose their shine and appear dull, because of the ACTION of air and MOISTURE on them. Some metals as a result of OXIDATION with the atmospheric oxygen form oxides and by which their appearance becomes dull. |
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| 1918. |
Some metals often lose their shine and sull because of the action of? |
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Answer» Answer: AIR Explanation: Some METALS often lose their shine and appear dull, because of the action of air and MOISTURE on them. Some metals as a result of oxidation with the atmospheric OXYGEN form OXIDES and by which their appearance becomes dull. HOPE IT HELPS YOU. MARK A RANK AND GIVE A THANKS. |
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| 1919. |
Which of the following is not a reversible change? (a) The change of water into water vapours. (b)The melting of iron. (c) The burning of kerosene. (d) the condensation of water vapours. |
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Answer» the MELTING of IRON is REVERSIBLE change Explanation: please MARK as brainlist |
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| 1920. |
If you will answer I will be add brainy list....1)Among the following, the element with smallest covalent radii is..a) Be..b) B..c) C..d)N..2)The ions O-2, F-, Na+, Mg+2, A1+3 are iso electronic. Their ionic radii show....a) An increase from 0-2 to F- and then decrease from Nat to Al+3...b) A decrease from 0-2 to F- and then increase from Nat to Al+3...c) A significant increase from O-2 to Al+3...d) A significant decrease from O-2 to A1+3... |
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Answer» a SIGNIFICANT INCREASE from 0-2 to A1+3 |
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| 1921. |
Order of reaction can be fractional |
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Answer» Answer: The ORDER of reaction is an experimentally DETERMINED PARAMETER and can take on a FRACTIONAL value. This is distinct from the molecularity (or stoichiometry) of the reaction which is the theoretical integer value of the number of molecules involved in the reaction. HOPE THIS WILL HELP YOU |
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| 1922. |
Mso4 is the sulphate of an metal state the formulae when it combines with hydroxide plzz fast |
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Answer» Question: MSO₄ is the sulphate of an metal state the formulae when it COMBINES with hydroxide __________________________________________________________ Answer and EXPLANATION: As the valency of sulphate is -2 and valency of hydroxide ion is -1, then, there will be: 2 x 1 = 2 hydroxide ions in the metal M so, the hydroxide of the metal is: M(OH)₂ __________________________________________________________please mark me BRAINLIEST |
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| 1923. |
बटन जंपर एडमिनिस्ट्रेटर ब्यूरो रिपोर्ट |
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Answer» क्या आप इसका मतलब बता सकते हैं मुझे यह मालूम नहीं हुआ |
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| 1924. |
If you give correct answer I will give you points...1)among the following the iso electric species are..a)o-1,,f-1..b)MG +2,,Ne..c) o-2,,Ar d) NA+,,CL-...( ) answer.....2)choose correct set of representation of atomic radius is.....a)Li>Be>B.....b)C |
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Answer»
AMONG the following the ISO electric species are..d) NA+,,CL-. choose correct set of REPRESENTATION of atomic radius is...Li>Be>B..... |
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| 1925. |
Bordeaux mixture and sulphur act as |
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Answer» assssss Explanation: ssssss............ |
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| 1926. |
Calculate number of carbon alomspresent in 720gm of glucose |
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Answer» No of MOLECULES of glucose=720×10*-3×6.02×10*23/180 No of CARBON in glucose=6 Number of carbon atoms=number of molecules of glucose×6 |
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| 1927. |
I have doubt on chemistry the question is a black non metallic compound of the mixture gunpowder |
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| 1928. |
Find out the masses of acid and water required to prepare 1 mole of CH3COOH solution of 0.3 mole fraction of CH3COOH |
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Answer» i will tell you plz mark me as brainlent first Explanation: why not using weight instead of volume? any REASON? instead of 0.211 ml we can use a BALANCE and add 0.245 g it is faster and more RELIABLE, isn't it? |
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| 1929. |
Calculate Number of carbon alomspresent in 720gm of Cathao |
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Answer» what's that cathao |
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| 1930. |
A copper wire is placed in a colorless solution of silver nitrate.a. Write two changes that will be observed.b. Write a balanced chemical equation for the same. |
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Answer» a) Changes will be:- 1) the colour of the solution will change to blue. 2) a thin COVERING of silver would be coated on the wire. b)- Balanced equation is:- Cu + 2AgNO3 = Cu(NO3)2 + 2Ag I HOPE IT WILL HELP YOU!!!! |
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| 1931. |
Take a test tube of good quality glass material and put a small amount of water in it. Place a stop cork at the mouth of it. Now suspend the test tube horizontally by two strings or wires as shown in figure. Heat the test tube with a burner until water vaporizes and the cork blows out 1.The test tube recoils in the direction of ____________. 2.Which one is having less acceleration? 3.Which one possess more velocity? 4.The principle involved in this activity |
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Answer» i THINK chlorine please MARK me as brainliest answer |
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| 1932. |
In is the law of conservation of mass is applicable for everywhere if yes or no give your explanation with examples |
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| 1933. |
common salt is obtained from sea water by the process of evaporation but its purification is done by- |
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Answer» Explanation: Sea water is trapped in large, SHALLOW pools and allowed to stand there. The sun's HEAT evaporates the water SLOWLY and common SALT is left behind. This impure common salt obtained has impurities and is hence purified to obtain PURE common salt by recrystallization. |
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| 1934. |
Why do aluminium articles not get wasted like Iron articles, even after corrosion? explain. |
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Answer» Explanation: Iron and STEEL RUST when they come into contact with WATER and oxygen. They rust faster in salty water or acid RAIN. Aluminium, on the other hand, does not corrode easily, because its surface is protected by a layer of aluminium oxide. |
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| 1935. |
Which of the following represents the electronic structure of three elements in the same group of the Periodic Table? a) 2, 7 2, 8, 7 2, 8, 8, 7 b) 2, 7 2, 8 2, 8, 1 c) 2, 8 2, 8, 1 2, 8, 2 d) 2, 8, 2 2, 8, 3 2, 8, 4 |
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Answer» Answer: 2,3,4,5,6 is a PERIODIC table Explanation: |
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| 1936. |
Please answer the question also. no 2&5 only give |
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Answer» Answer: 2} It will BURN with a POP sound Mark me as BRAINLIEST |
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| 1937. |
Differentiate between aluminium wire andLPG gas in terms of state of matter |
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Answer» In terms of states of MATTER Aluminium WIRE is a solid and LPG gas is FLUID |
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| 1938. |
Plzzz tell fast something important |
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Answer» Explanation: a) Don't know but I GUESS latitude b) METAMORPHIC Rocks c) Parent Bedrock d) Sandy soil e) Psycrometer All the BEST |
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| 1939. |
Fill in the blanks :1. Thermal decomposition of Sodium Carbonate will produce2. The Chemical name of Blue Vitriol is3. The gases dissolved in water can be easily expelled by4. The boiling of water alsodue to the presence of dissolved impurities |
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Answer» Answer: SODIUM hydrogen CARBONATE (also known as sodium bicarbonate or bicarbonate of soda) has the CHEMICAL formula NaHCO3. When it is HEATED above about 80°C it begins to break down, forming sodium carbonate, water and carbon dioxide. This type of REACTION is called a thermal decomposition. Explanation: plz ans right plz |
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| 1940. |
Difference between generation and windows |
Answer» generation of the PEOPLE born and living at about the same TIME to get it collectively.WINDOW is opening in the wall or roof of a building of VEHICLE project with glass in a frame to admit light aur and allow people to see out |
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| 1941. |
On exposing equal volumes of hydrogen, brass and kerosene to same amount of heat the rateof expansion from highest to lowest will be Please tell |
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| 1942. |
I. Choose the correct answer: -1. Which of the following is not a characteristic of a chemical change.It is irreversibleNo net energy is involvedNew substance is formedInvolves absorption or liberationof energy. |
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Answer» answer for this QUESTION is (it is IRREVERSIBLE ) |
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| 1943. |
1. Define Neutralization reaction with an example. |
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Answer» Answer: Here is your answer.... A neutralization reaction is when an acid and a base react to form water and SALT and INVOLVES the combination of HYDROGEN ions and hydroxyl ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.Example – 1: When Sodium hydroxide is ADDED to HYDROCHLORIC acid. Sodium chloride and water are formed.Example - 2: Milk of magnesia, which is a base, is given as antacid in the case of indigestion, to neutralize the more acid produced in the stomach.Thank u |
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| 1944. |
Can we say water (hydrogen oxide? |
Answer» ☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑☑ |
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| 1945. |
What is the 3rd name of water? 1=water, 2 H2O,, 3rd ? |
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Answer» Aqua Hope its CORRECT..... |
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| 1946. |
डडेफिनेशन ऑफ एसिड व्हाट इस एसिड |
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Answer» your answer is in English translate it Explanation: An acid is a molecule or ion capable of donating a proton, or, alternatively, capable of forming a COVALENT bond with an electron PAIR. The first CATEGORY of acids are the proton donors, or Brønsted–Lowry acids. |
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| 1947. |
Is diamond sonorous? Give examples of sonorous non-metal. Give examples of non sonorous metal (if any). Who will answer it correctly first, I will mark him/her as a brainliest. |
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Answer» Explanation: Few EXAMPLES are COAL and Sulphur. However, Diamond is an exception as it is the hardest non-metal. ... They do not possess METALLIC luster. Non-metals are not sonorous, they do not produce a ringing sound. |
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| 1948. |
Collect 25 chemical formulas with Name and symbol |
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Answer» Explanation: For example, the chemical formula for water is H2O which INDICATES that 2 ATOMS of Hydrogen combines with 1 atom of OXYGEN. The chemical formula for sodium chloride (Salt) is NaCl indicating that one atom of sodium combines with one atom of chlorine in a one-to-one RATIO. |
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| 1949. |
In how many units can we measure heat? |
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Answer» Answer: 2 unitsHeat is commonly expressed in either of TWO units: the calorie , an older metric unit, and the British thermal unit (BTU), an English unit commonly used in the United STATES. Scientists express heat in terms of the JOULE , a unit used for all forms of energy. hope it's helpful you |
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| 1950. |
9. In the equation x = ut + y2 at the dimension of length of RHS of the equation isLevel - 2:I. Single correct choice type:10. The distance travelled by a body in nth second is given by Sn = u(2n - 1)Where u is initial velocity and a is acceleration. The dimensions of Snare1. L2. LT-13. LT-24.L-1 T |
Answer» HOPE IT HELPS ...PLEASE MARK MY ANSWER |
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