Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Alcohols contain only one hydroxyl group​

Answer» TION:mowrmjrhog J o I n for F u n anyone for s. . E. x
2.

C6 h12o6 gives rise to C2h5oh+co2 balence this equation​

Answer»

------> 2c2h5oh + 2CO2

3.

Write the structure of alkenes ethane and propane​

Answer»

ch3ch3propane CH3CH2CH3

4.

Qos 90NH, +C1, →queN. + NH C/.​

Answer» WRITE the QUES PROPERLY
5.

2agcl---->ag+cl2calculate the no. of molecules of chlorine gasLiberate ​

Answer» ONE mole of chlorine gas is liberatedExplanation:2moles of agcl GIVES 2mole of AG and one mole of cl2 gas
6.

trace the sequence of how blood circulates to the legs, beginning with the blood leaving the left ventricle.refer to the image of circulatory system at the right ​

Answer»

The heart is a complex muscle that pumps blood through the three divisions of the circulatory system: the coronary (vessels that serve the heart), pulmonary (heart and lungs), and systemic (systems of the BODY), in Coronary circulation INTRINSIC to the heart takes blood directly from the main artery (aorta) coming from the heart. For pulmonary and systemic circulation, the heart has to pump blood to the lungs or the rest of the body, respectively. In vertebrates, the lungs are relatively close to the heart in the thoracic cavity. The shorter distance to pump means that the muscle wall on the right side of the heart is not as thick as the left side which must have enough pressure to pump blood all the way to your big toe.The heart muscle is asymmetrical as a result of the distance blood must travel in the pulmonary and systemic circuits. Since the right side of the heart sends blood to the pulmonary circuit it is smaller than the left side which must send blood out to the whole body in the systemic circuit. In humans, the heart is about the size of a clenched fist; it is divided into four chambers: two atria and two ventricles. There is one atrium and one ventricle on the right side and one atrium and one ventricle on the left side. The atria are the chambers that receive blood, and the ventricles are the chambers that pump blood. The right atrium receives deoxygenated blood from the superior vena cava, which drains blood from the jugular vein that comes from the brain and from the veins that come from the arms, as well as from the inferior vena cava which drains blood from the veins that come from the LOWER organs and the legs. In addition, the right atrium receives blood from the coronary sinus which drains deoxygenated blood from the heart itself. This deoxygenated blood then passes to the right ventricle through the ATRIOVENTRICULAR valve or the tricuspid valve, a flap of connective tissue that opens in only one direction to prevent the backflow of blood. The valve separating the chambers on the left side of the heart valve is called the biscuspid or mitral valve. After it is filled, the right ventricle pumps the blood through the pulmonary arteries, by-passing the semilunar valve (or pulmonic valve) to the lungs for re-oxygenation. After blood passes through the pulmonary arteries, the right semilunar valves close preventing the blood from flowing backwards into the right ventricle. The left atrium then receives the oxygen-rich blood from the lungs via the pulmonary veins. This blood passes through the bicuspid valve or mitral valve (the atrioventricular valve on the left side of the heart) to the left ventricle where the blood is pumped out through aorta, the major artery of the body, taking oxygenated blood to the organs and muscles of the body. Once blood is pumped out of the left ventricle and into the aorta, the AORTIC semilunar valve (or aortic valve) closes preventing blood from flowing backward into the left ventricle. This pattern of pumping is referred to as double circulation and is found in all mammals.

7.

Below which ph value , our teeth get corroded?​

Answer»

5.0 to 5.7 EXPLANATION: In general, foods and drinks with a pH below 5.0–5.7 have been KNOWN to TRIGGER DENTAL erosion effects.

8.

In soft drinks,Which is the material used to prevent the particles settle down?

Answer»

drink (see § Terminology for other names) is a drink that usually contains carbonated WATER (ALTHOUGH some vitamin waters and lemonades are not carbonated), a sweetener, and a natural or artificial flavoring. The sweetener may be a sugar, high-fructose corn syrup, fruit juice, a sugar substitute (in the case of diet drinks), or some COMBINATION of these. Soft drinks may also contain caffeine, COLORINGS, preservatives, and/or other ingredients.

9.

Tell whether 'a mass of powdered milk in your glass of milk' an extensive property or intensive property of matter. Provide a reason/evidence why you consider it as such.

Answer» EXPLANATION:I agree to mow someone's lawn for twenty dollars (it's a fairly big yard). When they PAY me, they give me a $20 bill. It doesn't matter WHETHER the bill is brand new or old, DIRTY, and wrinkled - all these bills have the same value of $20. If I want more $20 bills, I have to mow more lawns. I can't say, "This particular bill is actually worth more than $20." To have more money, I have to put in more work.Extensive PropertiesSome properties of matter depend on the size of the sample, while some do not. An extensive property is a property that depends on the amount of matter in a sample. The mass of an object is a measure of the amount of matter that an object contains. A small sample of a certain type of matter will have a small mass, while a larger sample will have a greater mass. Another extensive property is volume. The volume of an object is a measure of the space that is occupied by that object.The figure below illustrates the extensive property of volume. The pitcher and glass both contain milk. The pitcher holds approximately two quarts and the glass will hold about 8 ounces of milk. The same milk is in each container. The only difference is the amount of milk contained in the glass and in the pitcher.Milk pitcher and glass.Intensive PropertiesThe electrical conductivity of a substance is a property that depends only on the type of substance. Silver, gold, and copper are excellent conductors of electricity, while glass and plastic are poor conductors. A larger or smaller piece of glass will not change this property. An intensive property is a property of matter that depends only on the type of matter in a sample and not on the amount. Other intensive properties include COLOR, temperature, density, and solubility.The copper wire shown in the picture below has a certain electrical conductivity. You could cut of the small end sticking out and it would have the same conductivity as the entire long roll of wire shown here. The conductivity is a property of the copper metal itself, not of the length of the wire.Copper wire.SummaryAn extensive property is a property that depends on the amount of matter in a sample.Mass and volume are examples of extensive properties.An intensive property is a property of matter that depends only on the type of matter in a sample and not on the amount.Color, temperature, and solubility are examples of intensive properties.Explore More
10.

A vertical spring of unstretched length 20 cm is clamped at its upper end. When an object of mass 100g is placed in a pan attached to the lower end of the spring ,its length becomes 40 cm . For an object of mass 200 g in the pan the length becomes 40cm . Complete the following table using the same spring ​

Answer»

A SPRING with its upper end fixed, hangs vertically alongside a MILLIMETER scale.  A vertical spring of unstretched LENGTH 30 cm is rigidly clamped at TITS upper end. Explanation:

11.

How do you prepare 100ml of 0.5M H2so4 from a stock of 8M H2so4?

Answer» EXPLANATION:Preparation and Standardization of 0.1 M Sulphuric Acid1. Add slowly, with STIRRING, 6 ml of Sulphuric acid to about 800 ml of purified water.2. MAKEUP to 1000 ml with purified water.3. Allow cooling at 25°C.
12.

Calculate the molality of a solution prepared by dissolving 47.5g of MgCl2 in 200g of water

Answer»

moles of MgCl2 = 4.75/95= 0.05molality = NUMBER of moles of solute/ mass of SOLUTION in SOLVENT (in kg)mass of solvent = 200/1000molality = 0.05 / (200/1000)MOLALITY = 0.5 / 2molality = 0.25 mhope this will help you

13.

Calculate the mass of Al2(so4)3 in 250ml of solution if the concentration is 0.48N

Answer» TION:MARK BRAINLIST follow=followHope it HELPS
14.

Which is the following not correct

Answer» B--- IS THE NOT CORRECT.THNX MY ANSWER
15.

coal is a fossil fuel produced from plant material underground over very long geological periods of time.What are petroleum and natural gas originally formed frome​

Answer» TION:HOTT girlls jjoiin for x.x.x.xztnbkpstew
16.

In an experiment, zinc chlorate decomposed according to the following chemical equation. Zn(ClO3)2 → ZnCl2 + O2 (Molar mass of Zn(ClO3)2 = 232.29 g/mol; ZnCl2 = 136.286 g/mol; O2 = 31.998 g/mol) If the mass of zinc chlorate was 150 grams, which of the following calculations can be used to determine the mass of oxygen gas formed? (4 points)

Answer»

please mark as brainlistExplanation:5. (05.04 MC) In an experiment, zinc chlorate decomposed according to the following chemical equation. Zn(CIO3)2 -- ZnCl2 + O2 (Molar mass of Zn(CIO)2 - 232.29 g/mol; ZnCl2 - 136.286 g/mol; 02 - 31.998 g/mol) If the mass of zinc chlorate was 150 grams, which of the following calculations can be used to determine the mass of oxygen GAS formed? (4 points) (150 x 1 x 232.29) + (31.998 x 3y grams (150 x 3 x 232.29) + (31.998 x 1) grams (150 x 1 x 31.998) + (232.29 x 3) grams (150 x 3 x 31.998) + (232.29 x 1) grams

17.

Read the following chemical equation. Fe + O2 → Fe2O3 Which of the following fractions can be used for the mole ratio to determine the mass of Fe from a known mass of Fe2O3? (4 points) A 4/2 B 3/2 C 2/3 D 2/4

Answer» TOP COMMENTS to HAI hgvgoplkjhg
18.

What mass of CO is needed to react completely with 55.0 g of Fe2O3 in the reaction: Fe2O3(s) + CO(g) → Fe(s) + CO2(g)? (4 points)

Answer»

ams of CO are needed to react with 55.0 GRAMS of IRON(II)oxide.Please MARK me brainiest

19.

What mass of CO is needed to react completely with 55.0 g of Fe2O3 in the reaction: Fe2O3(s) + CO(g) → Fe(s) + CO2(g)? (4 points) A. 4.82 g CO B. 9.64 g CO C. 14.5 g CO D. 28.9 g CO

Answer» OPTION D. 28.9 g CO is the ANSWER.Hope it helps you :)If YES, then please MARK this as the brainliest answer!
20.

How many moles of sodium cyanide (NaCN) would be needed to produce 4.2 moles of sodium sulfate (Na2SO4)? H2SO4 + 2NaCN → 2HCN + Na2SO4 (4 points)

Answer» H2SO4 + 2NACN → 2HCN + NA2SO4 (4 POINTS)
21.

when 2 mole of H2 and 1 mole of O2 at 100°C and 1 torr pressure react to produce 2 mole of gaseous water, 484.5 KJ of energy are evolved. What are the values of ∆H and ∆E for the production of H2O.?​

Answer»

tion:tefan V.Feb 27, 2018H2(G)+12O2(g)→H2O(l) ΔH=−276 kJExplanation:You know that when 2 moles of hydrogen gas react with 1 mole of oxygen gas, you GET 2 moles of water and 572 kJ of HEAT are evolved.2H2(g)+O2(g)→2H2O(l) ΔH=−572 kJDon't forget that the enthalpy change of reaction MUST be negative here to illustrate the fact that heat if being given off by the reaction.Now, in order for this reaction to produce 1 mole of water, all the coefficients of the chemical equation must be halved.(12⋅2)H2(g)+12O2(g)→(12⋅2)H2O(l)This will get youH2(g)+12O2(g)→H2O(l) Now, the enthalpy change for this reaction will be half the value of the enthalpy change for the reaction that produced 2 moles of water.ΔH1 mole H2O=12⋅ΔH2 moles H2O ΔH1 mole H−2O=−572 kJ2=−286 kJ This means that the thermochemical equation that describes the formation of 1 mole of water looks LIKE thisH2(g)+12O2(g)→H2O(l) ΔH=−276 kJTo write the thermochemical equation that describes the decomposition of 1 mole of water into hydrogen gas and oxygen gas, you need to reverse the chemical equationH2O(l)→H2(g)+12O2(g) and change the sign of the enthalpy change of reaction.ΔHreverse=−ΔHforward This means that the thermochemical equation will look like thisH2O(l)→H2(g)+12O2(g) ΔH=+276 kJThis means that when 1 mole of water undergoes decomposition, 276 kJ of heat are being absorbed

22.

If a gas expands isothermally then​

Answer» L gas EXPANDS isothermally from volume V1 to V2 and is then COMPRESSED to original volume V1 ADIABATICALLY.
23.

Calculate the normality of KOH solution containing 11.2g of KOH in 10litere

Answer»

13Explanation:Molarity of KOH solution =   weight /MOLECULAR weight × volume                                          =5.6/56 x 1                                            =0.1MThis is EQUAL to [OH - )pOH=−log[OH  − ]=−log(0.1)=1 pH=14−pOH=14−1=13. ​

24.

Charge on any ion depend upon gain or loss of

Answer»

tion:charge of an ion depends upon gain or loss of electrons. ... for EXAMPLE: metals donate thier free electrons and gain a positive state and hence, they are CALLED as positive ions. in non-metals, the SITUATION is just the OPPOSITE of metals.

25.

The best disinfectant isA)chlorineB)iodineC)sulphurD)sodium​

Answer»

a) CHLORINE is the BEST DISINFECTANT

26.

. Assertion-(A): When common salt iskept open, it absorbs moisture from the air. Reason-(R): Common salt contains magnesium chloride.

Answer» ASSERTION is CORRECT but REASON is INCORRECT
27.

Describe how to make the send clock model with the help of object found around us

Answer»

you can take SAND from beaches or you can find out it from the toy shop also (playing sand) and take two PLASTIC glasses , goin them and MAKE a NARROW hole between the and then COVER up the both edges of the glass which are open

28.

Name The postulates of Dalton's atomic theory

Answer»

All matter is MADE of atoms. Atoms are indivisible and INDESTRUCTIBLE. All atoms of a given element are identical in mass and properties. COMPOUNDS are formed by a COMBINATION of two or more different KINDS of atoms. A chemical reaction is a rearrangement of atoms.Explanation:

29.

Why are group ( I) elements have a high boiling points than group ( ii)?

Answer» TION:Higher melting and boiling points than Group I elements. Less reactive than Group I elements. This is because it is more difficult to LOSE two electrons compared to losing just one electron. ... Melting points and boiling points decrease down the group DUE to weaker forces of attraction between ATOMS.
30.

Calculate mass of NaOH reqired to make 500 ml of 0.5 M aqueous solution

Answer» ALONE here NEED someoneExplanation:vqszowrgxp
31.

Molecular orbital picture of ch3coh

Answer»

fxtxlsvsxo6dftxoyc cxlhupcyy and individuals are the FOLLOWING SOURCES as SAYING 2nd and individuals Explanation:hcuxvd st 28th 2nd and individuals are the following 2nd of TEACHER and students give Jorge itch to you and all 82

32.

Npfpgokfjk. Who invented needle name the era and the scientist..

Answer»

here's your answerhope this HELPS

33.

Establish relations m between kp,ke,&kx

Answer»

Bankim Chandra ChattopadhyayAnandamath (Bengali: আনন্দমঠ Anondomôţh) ( lit. The ABBEY of Bliss) is a Bengali FICTION, written by Bankim Chandra Chattopadhyay and published in 1882....ANANDAMATH.

34.

Harwarth systhsis of napthlene

Answer»

It can be SYNTHESIZED by Haworth synthesis, the STEPS are as follows: 1. The Friedel craft acylation reaction of benzene with succinic ANHYDRIDE gives 3 benzoylpropionic acid. ... The Clemmenson reaction of α-tetralene gives tetrahydronaphthalene.mark me as BRAINLIEST...

35.

Oxidation never involves​

Answer» ANSWER is here...☺️☺️☺️☺️
36.

LIST ATLEAST OR ALMOST TEN COMPOUND WITH THEIR TRIVIAL NAME AND THEIR INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY (IUPAC) NAME

Answer» INCORRECT questionExplanation:please SEND CORRECT PNE
37.

Among diffusion and effusion which one happens first in case of body spray?​

Answer»

• The kinetic theory describes a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their MANY collisions with each other and with the walls of the container.•Not only do gaseous particles move with high kinetic energy, but their small SIZE enables them to move through small openings as well; this process is KNOWN as effusion. •For effusion to occur, the hole’s diameter must be smaller than the molecules’ MEAN free path (the average distance that a gas particle travels between successive collisions with other gas particlesExplanation:hope this HELPS you (◍•ᴗ•◍)❤

38.

When Benzyl Trimethyl Ammonium Chloride react with Naoet then product will be what?

Answer» EXPLANATION:When we have attempted to use a cotton plug for REMOVING the CaCl2 the students have used excessive amounts of cotton and lost significant amount of PRODUCT. Characterization of products
39.

Inner pair effect down the group increase

Answer»

The Electrons present in the intervening d-(and f-) orbitals do not effectively shield the s-electrons of the VIOLENCE SHELL down the group. As a result, the inert PAIR of s Electrons remains more tightly HELD by the nucleus and hence participates less in bond FORMATION.

40.

How many water molecules are there in 1 kgmof water

Answer»

tion:TAKE the RECIPROCAL of the MOLAR mass (1/18.01528 mol/g) and multiply by 1000g (equivalent of 1kg). This will give you the number of moles in 1 liter of water. Finally, multiply this number of moles by AVOGADRO's number (6.022 E23 molecules/mol) to find the number of water molecules in the liter of water.

41.

What will happen between diffusion and effusion in case of body spray?​

Answer»

please mark me as brainlistExplanation:For effusion to OCCUR, the HOLE's diameter MUST be SMALLER than the molecules' mean free path (the average distance that a gas particle ...

42.

What are bases and alkalies?➝REQUIRED GOOD ANSWER​

Answer»

ompounds which GIVE OH- IONS IN WATER ARE CALLED BASES.Water soluble bases are called ALKALIES

43.

Write the molecular formula of the 2nd and 3rd member of the homologous series whose first member is ethene

Answer»

Here's your ANSWER!!!EXPLANATION:The FIRST member of alkene series is Ethene C2H4.The SECOND member is PROPENE C3H6.The third member is Butene C4H8.Hope it helps!!!

44.

Among the following how many are allotropes of sulphur flooring milk of magnesia graphite rhombic and monoclinic Y Monu clean a mono clean

Answer»

Calcium CARBIDE is best known for its hydrolysis REACTION to produce acetylene (C 2 H 2) gas, a potential FUEL for SOFCs. Calcium imide on hydrolysis will give gas (B) which on oxidation by bleaching powder gives gas (C). The offered method includes the NEW system of a two-stage quick chilling intended for extraction at the FIRST stage of water from the outgoing from the reactor flow and regeneration of heat of this flow for the purpose, at least, of the partial evaporation of the raw flow due to indirect heat-exchange between the oxygenated raw and the flow of the

45.

Nacl is soluble in water , agcl is not why

Answer»

Salt (sodium CHLORIDE) NACL is made from positive sodium ions bonded to negative chloride ions. ... Agcl is NON -polar because of big size of silver ion with chlorine ion and so it's deform the electrons shells,so this gives its non polar nature so agcl insoluble in WATER ...

46.

D gas, liquid or solid impurities from a mixture. e waterseparated byA sublimationB evaporation to dryness.using a separating funnelD fractional crystallizationOn of waterItration andstallation19. Classify each of the following changes as eithera physical or a chemical change.18. A mixture of oil and water can be easily(a) The addition of water to quicklime (ie the(b) The melting of candle wax(c) The change in colour of zinc oxide fromwhite to yellow and vice versa during heatingand after cooling respectively.(d) The dissolution of copper in concentratedtrioxonitrate(V) acid(e) The dissolution of common salt in waterin The hardening of cement by the absorptionof carbon (IV) oxidesiaking of lime)Co, andusing the​

Answer»

tion:there are do MANY QUESTIONS PLEASE tell one QUESTION

47.

State the law of conservation of mass and explain it with experiment​

Answer» VERIFY law of conservation of mass with an experimentAccording to the law of conservation of mass, during any physical or chemical change, the matter is neither created nor DESTROYED. ... The mass of the tube is found to be exactly the same as the mass obtained before inverting the tube.Explanation:HOPE it helps you PLEASE dear mark as brainleast ANSWER me
48.

Write the energy of first orbit of hydrogen atom

Answer»

We know that ENERGY of NTH orbit, En = -K/n2 (for HYDROGEN atom), where K is a CONSTANT....Solution:Orbit Energy1 -13.6/12 = -13.6 eV2 -13.6/22 = -3.4 eV3 -13.6/32 = -1.51 eV4 -13.6/42 = -0.85 eV

49.

Balance this equation: H20=H+02​

Answer»
50.

Balance this equation: CH4+O2=CO2+H20​

Answer» TION:ch4+2o2=co2+2h2o HOPE U GET this