Explore topic-wise InterviewSolutions in .

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.

5551.

Name the scientist who introduced the modern system of naming elements ?please answer in sentence..​

Answer»

the SCIENTIST who INTRODUCED modern periodic table is DMITRI Mendeleev

5552.

Ye to aap pe depend krta hjo bulana h bulao​

Answer» MW thik HU behen tu bta Explanation:↑(◍•ᴗ•◍)❤࿐
5553.

Yes sis it's my life ​

Answer»

My ALSO PLS be my FRIEND sisis

5554.

Iron + oxygen + water is equal to ​

Answer» TION:The iron reacts with WATER and OXYGEN to form hydrated iron(III) OXIDE
5555.

List three properties of mixture

Answer» MIXTURE is MADE up of DIFFERENT KIND of MOLECULES
5556.

Write information about malonic acid??Its chemical formula Don't spam ​

Answer»

Malonic acid is a dicarboxylic acid with a CHEMICAL formula C3H4O4. ... The SYSTEMATIC name for malonic acid IUPAC is propanedioic acid.Explanation:hope it will HELP you.

5557.

what are the uses 1. Carbohydrates 2. Protein 3. Fats 4. Fibre 5. Vaamins and Minerals 6. Iron 7. Calcium​

Answer»

DRATES: One of the primary functions of carbohydrates is to provide your body with energy. Most of the carbohydrates in the foods you eat are digested and broken down into glucose before entering the bloodstream.PROTEINS: Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In ADDITION to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.FATS: A small amount of fat is an essential part of a healthy, balanced diet. Fat is a source of essential fatty acids, which the body cannot make itself. Fat helps the body absorb vitamin A, vitamin D and vitamin E. These vitamins are fat-soluble, which means they can only be absorbed with the help of fatsVITAMINS AND MINERALS: VITAMINS AND MINERALS: Vitamins and minerals are considered essential nutrients—because acting in concert, they PERFORM hundreds of roles in the body. They help shore up bones, heal wounds, and bolster your immune system. They also convert food into energy, and repair cellular damage.IRON: IRON: Iron is needed for transporting oxygen and carbon dioxide. It also has other important roles in the body. Iron can be found in foods LIKE meat, FISH, tofu, beans, spinach, cereal and other foods. Iron is most commonly used for preventing and treating anemia caused by low iron levels.CALCIUM: CALCIUM: The body needs calcium to maintain strong bones and to carry out many important functions. Almost all calcium is stored in bones and teeth, where it supports their structure and hardness. The body also needs calcium for muscles to move and for nerves to carry MESSAGES between the brain and every body part.

5558.

1. Rayon and nylon are a detergents b. synthetic fibres c. natural fibres. d. fertilizers​

Answer» B. SYNTHETIC fibresExplanation:
5559.

What is unit? name the fundamental unit​

Answer»

In the International System of Units, the fundamental units are: The meter (symbol: m), used to MEASURE LENGTH. The KILOGRAM (symbol: kg), used to measure mass. The second (symbol: s), used to measure TIME. The ampere (symbol: A), used to measure electric current.Explanation:hope it HELPED

5560.

You are given a sample of water. How will you find out whether it is pure or not?

Answer»

It's PURE EXPLANATION:You can CHECK by pasing it through funel

5561.

अब तो आदत हो गई है , तुम्हारी इंतजार करने की , क्या पता अब हमसे इंतजार करवाते करवाते कही आप हमे खो ना दो​I am gaurav yadav from uttr Pradesh age 16 okk​

Answer»

so SWEET ,EXPLANATION:KISKA intezaar HAI AAPKO

5562.

Different metal take different time to consist hit prove this statement​

Answer»

Explanation:First, let me explain why metals generally conduct heat better than other solids do. In metals, some of the ELECTRONS (often one per atom) are not stuck to individual atoms but flow FREELY among the atoms. Of course, that's why metals are such good conductors of electricity. Now if one end of a bar is hot, and the other is COLD, the electrons on the hot end have a little more thermal energy- random jiggling- than the ones on the cold end. So as the electrons wander around, they carry energy from the hot end to the cold end, which is another way of saying they conduct heat. Of course, how fast they conduct heat depends a lot on things like how many free electrons are around, on how fast they move, and especially on how far they usually go before they bump into something and change direction. Those are the same factors that determine how well the metal conducts electricity. So there's a rule that works very well, saying that the thermal conductivity of a metal (at some temperature) is proportional to the electrical conductivity. That's convenient because it's much easier to measure electrical conductivity than thermal conductivity. So now I'll get a little closer to answering your QUESTION. The biggest factor giving different conductivities for ordinary metals is the difference in how far the electrons go before they hit something. It turns out, for amazing reasons connected with the wave nature of electrons, that they can flow right through a perfect crystal WITHOUT bouncing, the same way light travels through a clear crystal. Lots of metals (stainless steel, brass, etc) are alloys of several elements, and the electrons bounce off all the irregularities in the arrangement of the different atoms. So those aren't good conductors. Even in a pure metal, the electrons still bounce some, because the thermal jiggling of the atoms keeps them from ever forming a perfectly exact crystal arrangement.

5563.

The constituents of coal gas are carbon monoxide,hydrogen methane + hydrogen methane carbon monoxide + methane

Answer»

The constituents of coal GAS are hydrogen, carbon monoxide, METHANE, ethylene and VOLATILE hydrocarbons.

5564.

Name the acid present in 1. lemon juice 2. tomato. 3. Curd 4. Tamarind 5. Tea​

Answer»

In LEMON CITRIC acid in TOMATO malic acid in curd lactic acid in tamarind tartaric acid in tea TANNIC acid

5565.

What happen when following metal react with dilute hydrocloric acid

Answer»

pls MARK me as brain listpls mark me as brain listExplanation:Metals GENERALLY REACT with dilute ACIDS to produce hydrogen gas.

5566.

What happen when following metal rreact with dilute hydrocloric acid (a) maggnisium

Answer» SORRY I don't KNOW
5567.

HiiGood evening My day was greatHave a nice day aheadYes we can be friends​

Answer»

no nononono just teasingExplanation:GOOD EVENING SISI

5568.

Very often copper vessel when exposed to moist air for a long period develops a greenish layer o the surfaces.This is a mixture of in formula ​

Answer» DUE to the FORMATION of CU2O
5569.

Question- (i),(ii),(vi),(vii)​

Answer»

i) 19xyii) 3avi) 25 X2Y

5570.

Which of the following statements is incorrect? The molecular formula of benzene is CoHoMolecular formula represents onemolecule of the substanceAn ion can either be positively or negativelycharged speciesOzone is a diatomic molecule​

Answer»

The MOLECULAR FORMULA of BENZENE is C6H6.Ozone is a TRIATOMIC MOLECULE.

5571.

The chemical formula of sulphide of an element 'X' having valency 3 isXS2X2SX2S3•X2S2​

Answer» ITZ OPTION C) ...........................
5572.

If the ratio by number of constituent elements in a molecule of ammonia is 1:3, then theratio by mass of constituent elementrespectively is12:33:414:315:13​

Answer»

tion: The chemical FORMULA of AMMONIA is NH3. Atomic MASS of nitrogen is 14 and of hydrogen is 1×3=3 units. HENCE the correct option is A.

5573.

How to obtain zinc chloride from zinc​

Answer»

Dissolve your zinc in DILUTE HYDROCHLORIC acid. It will give off HYDROGEN and the remaining liquid will CONTAIN zinc chloride.Explanation:

5574.

3. The volume at s.t.p. occupied by a gas 'Z' originally occupying 1.57 dm'at 310.5K and 75cm. press of Hg The yolume ats.tpossunied by a gas'O' originally occupying 153.7 cm'at 287K and 750 mm pressure​

Answer»

gwgshshwhwheheheyegegeyeeyeyegeyeyeyrydhdyydyExplanation:1625252637373738283838383828282

5575.

Calculate the degree of dissociation of PCs, at 230°C the density at 230°C is 70. IM Wt ofPCIs is 208.5)97.8948.9%4.89%24.45​

Answer»

48.9% is UR ANS ......HOPE it HELPS U

5576.

What is love means ​

Answer» FAKE EXCEPT your PARENTS
5577.

The keyboard shortcut to display the rulers is​

Answer»

You can SEARCH it in GOOGLE BRO or SIS

5578.

A soil sample has percolation rate of 5mL/min. If 1L of water is poured over this sample how long will it take for the water to percolate?

Answer»

It DEPENDS on the SOIL ABSORPTION RATE and soil TYPE.

5579.

The half Life period of a reaction is 100 min. In 400 minutes the initial concentration of 2.0 g will become-- A)0.25gB)0.75gC)0.125g D)0.1g Plz answer....​

Answer» C) 0.125gExplanation:no.of half-lives = N = 400/100 = 4Nt = ( No/2^n) =( 2/2^4)= 0.125g
5580.

All the three p-orbitals of subshell have the same ______ and shape​

Answer»

sizeExplanation:

5581.

Draw structure of the following compounds: (a) Ethanoic acid (b) n-Pentane(c) Hexanal(d) Butanone(e)Ethanal(f)Bromopropane​

Answer»

I HOPE this can HELP youExplanation:PLEASE MARK my ANSWER

5582.

Free points A brief information about two atoms X and Y is given:X: Atomic number = 7, Mass number = 14Y: Atomic number = 7, Mass number = 15Which of the following is correct aboutthese two atoms?(A) Electronic configuration of X is 2, 8,4while that of Y is 2, 8, 5.(B) Both X and Y contain 7 neutrons.(C) X has 2 electron shells while Y has3 electron shells.(D) Both X and Y have 5 valence electrons.​​

Answer»

(A) ELECTRONIC CONFIGURATION of X is 2, 8,4(A) Electronic configuration of X is 2, 8,4while that of Y is 2, 8, 5.Explanation:Hope it HELPS.

5583.

The element(s) with valency 1 is / area. hydrogen b.flourine c.sodium d.magnesium​

Answer» N HOPE it's HELP you
5584.

What is China rose and why it is used as indicators

Answer» SOAK some petals of china rose in warm water for a couple of hours. The red-coloured solution is used as an indicator for detecting an acid or a base solution. It turns into magenta in acidic medium and green in basic medium. Hence, it is a natural indicator.China rose indicator. China rose indicator. Another natural indicator used to determine whether a substance is acidic or basic is China rose which turns acidic solutions to DARK pink or magenta COLOUR and basic solutions to green colour.Explanation:China rose CONVERTS acidic solution to dark pink, basic solutions to green colour and has no colour change for neutral solutions. China rose is a natural indicator and is used to identify the acidic or basic NATURE of a solution.
5585.

The highly electropositive elements are​

Answer» AMONG all the elements of the periodic table, the alkali metals are considered to be the most ELECTROPOSITIVE. Caesium is known to be the most electropositive STABLE elementExplanation:
5586.

Write the names and numbers of atoms of the elements each of these compounds are made up of. The first one has been done for you:- 1. CO² (carbon dioxide): 1 atom of carbon + 2 atoms of oxygen.3. CuSO⁴ (copper sulphate): ________​

Answer»

3. 1 ATOM of COPPER + 1 atom of sulphur + 4 ATOMS of oxygen

5587.

The symbol Cu is the symbol fora. ironb. copperc. Krypton​

Answer» E UR ANSWER B - COPPER
5588.

Column - 1 A) AzuriteB) MalachiteC) ChalcopyritesD) CupriteE) MagnesiteF) DolomiteColumn - II1) Sulphide of iron2) Sulphide of copper3) Oxides of copper4) Ore containing carbonate of copper5) Ore of magnesium6) Carbonate ore A B C D E F(a) 4 4 2 3 5 6(b) 3 4 1 2 5 6(c) 4 4 2 2 6 5(d) 3 2 4 1 6 5​

Answer»

ndememenrnw enenneennenenek2k2ekehhebnnjekemmmllbnkjjn69066899u77nhjjj788866nn99

5589.

What is the ful form of a.m.u.​

Answer» ATOMIC MASS UNIT i THINK so
5590.

1 Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis(b) Dissolving sugar in water(c) Burning of coal(d) Melting of wax(e) Beating aluminiun to make aluminium foil(f) Digestion of foodState whether the following statements are true or false in case a​

Answer»

a) Chemical change. b) Physical change. C) Chemical change. d) Physical change. e) Physical change. f) Chemical change. EXPLANATION:Physical changes are the changes in which we can RECOVER or RETRIEVE the source or the main object. Chemical changes are irreversible changes. Once done, we can't get the source or the main object.

5591.

Plz help me in this question ​

Answer»

The above PICTURE has both ANSWER and EXPLANATION.

5592.

2 or c. Write the word equations for the following reactions.1. Magnesium ribbon or wire burns in air to form magnesium oxide.2. Hydrogen combines with chlorine to form hydrogen chloride,3. Iron is heated with sulphur to form iron sulphide.4. Calcium carbonate when heated decomposes to give calcium oxide and carbon dioxide.5. Molten sodium chloride decomposes to give sodium metal and chlorine gas when electric currentis passed through it.​

Answer»

is in the above taken pic!UR ANS is in the above taken pic!hope it HELPS uUr ans is in the above taken pic!hope it helps U

5593.

Determine the molecular mass of: (i) ZnSO 7H,(ii) K,CO,Atomic masses : H = 1.00, 0 = 16, C = 12, K = 39, Zn = 65, S = 32Solution:​

Answer»

1583724Give - Atomic Mass of ZN= 650 =Atomic Mass Na = 23u ofAtomic Mass of k= 39u Atomic Mass of C =12u ==Atomic Mass ofo = 160 =Formula Mass of ZNO = Atomic mass of Zn + Atomic MALL ofニ 6S0+ \6u= 810Formula Mass of NazO = 2X Atomic mall of Na + Atomic mass of= 2 x 230+ 16u- 460+ 160こ620Formula Mass of X COs = 2x Atomic mass of K+ Atomic Mass of C+3x Atomic Mass of o= 2x39 u + 12u+ 3x160= 780 + 120 + 480= 138 u

5594.

Assertion (A): All minerals are ores. Reason (R): Ores are the minerals from which metal can be extracted conveniently and economically.a) Both A and R are true and R is the correct explanation of Ab) Both A and R are true and R is not correct explanation of Ac) A is correct and R is incorrectd) A is incorrect and R is correct.​

Answer»

erals are not ORE ...but all ores are mineralsExplanation:a mineral from which a metal is easily ( ore should be easily AVAILABLE,have high metal content ,easily EXTRACTED and economically profitable)extracted is called ore of that metal

5595.

Calculate the molecular weights of the following molecules: ohy? (A) Carbon dioxide(B) Carbon monoxide(C) Nitrogen dioxideSolution:​

Answer»

A) 44.01 amuB)28.01 g/molC)46.0055 g/molExplanation:

5596.

What are the basics on which the industries can be classified?Give atleast two examples of each?​

Answer»

ting point of a substance is the TEMPERATURE at which it transforms from a solid to a LIQUID state. METALS show a HIGH melting point as they exist in a crystalline solid FORM. High melting point metals have strong intermolecular forces between atoms.

5597.

Both calcination and roasting can be performed in (a)reverberatory furnace (b)blast furnace C)muffle furnace D)electric furnace​

Answer» B ANSWWER................