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.

Saturation vapour pressure of water at 10C is 9 mm of Hg Ifthe actual vapour pressure at10°C in a room is 3 mm of Hg,then the humidity is.​

Answer»

Explanation:SATURATION vapour PRESSURE of water at 10C is 9 mm of Hg If the ACTUAL vapour pressure at 10°C in a room is 3 mm of Hg, then the humidity is.​aturation vapour pressure of water at 10C is 9 mm of Hg If the actual vapour pressure at 10°C in a room is 3 mm of Hg, then the humidity is.​tual vapour pressure at 1then the humidity is.​

2.

What is the difference between evaporation and boiling​

Answer»

To SUMMARIZE, EVAPORATION is slower, occurs only from the surface of the liquid, does not produce bubbles, and leads to cooling. Boiling is faster, can occur throughout the liquid, produces lots of bubbles, and does not result in cooling.Explanation:Plzz MARK me as brainlist answer if my answers is STRATIFIED

3.

Find the nitrogen content of 100 kg of urea sample containing 96.43% pure urea.

Answer»

lanation:100 -96.43% OK ok okokokokokokok

4.

Determine the number of moles present in 0.55mg of electrins

Answer» PLEASE MARK ME AS BRAINLIEST Explanation:Mass of one ELECTRON = 9.1 * 10^-31 kg TOTAL NUMBER of electrons in 0.55 * 10^-6 kg = 0.55 * 10^-6 / (9.1 * 10^-31) = 6 * 10^23 electrons 1 mol of electrons = 6 * 10^23 electrons. Therefore no. of moles of electrons present in 0.55mg of electrons is nearly 1.
5.

Significance of EAN is ​

Answer»

Effective atomic numbers are calculated for the central metal atoms of coordination compounds. They GIVE information regarding the stability of complexes and also help in UNDERSTANDING if the complex has reducing or oxidising properties. ... THUS the metal can ACCOMODATE an e- to get the EAN to be 36.

6.

Write r,s nomenclature​

Answer» TELL QUESTION....................,.....
7.

The non metal displacement redox reactions include _____ displacement and a rarely occuring reaction involving ____ displacement A. Calcium, aluminiumB. Oxygen , calciumC. Hydrogen, AluminiumD. Hydrogen, oxygen​

Answer» DEXPLANATION:
8.

Write two physical features which is is responsible for or the state of the matter?​

Answer» PHYSICAL PropertiesPhysical properties are properties that can be measured or observed without changing the chemical NATURE of the substance. Some EXAMPLES of physical properties are:•color (INTENSIVE)•density (intensive)•volume (EXTENSIVE)•mass (extensive)•boiling point (intensive): the temperature at which a substance boils•melting point (intensive): the temperature at which a substance meltsmαrk ítѕ вrαínlíєѕt plєαѕє
9.

Determine the mass of the following- (i)6.022×10^23 Number of O molecules​

Answer»

No. of MOLES =no. of MOLECULES/avogadro no.(6.022*10^23)Now,in CASE of 6.022*10^23 molecules of O2No.of moles =6.022*10^23/6.022*10^23=1As,no. of moles = GIVEN mass/molar mass1=mass/32g(O2)Mass=32gExplanation:i hope it hepls you

10.

615253Tolawस्क्वायर रूट ऑफ 69 10 + 95 अपऑन मनाई गुड मॉर्निंग 15 मार्च 21 ​

Answer»

Thanks for making FEEL a HAPPY GOOD MORNING

11.

वुडवर्ड फीज़र नियम समझाइए​

Answer» MARK me as a brainlistExplanation:PLZ
12.

Q.9. The electronic configurations of three elements X, Y and Z are X-2,8; Y-2, 8, 7 and 2-2,8,2 Whichof the following is correct?(a) X is a metal(b) Y is a metal(c) Z is a non-metal(d) Y is a non-metal and Z is a metalINCERT Exemp.​

Answer» PLEASE MARK me as BRAINLIEST
13.

name the gas that is produced in each of the following potassium suphite is treated with dilute hydrochloric acid​

Answer» SULFURIC gas Explanation:Potassium SULPHITE on reacting with HYDROCHLORIC acid releases sulphur DIOXIDE (SO2 ) gas.K 2SO +2HCl→2KCl+H2O+SO2
14.

Why is hydrogen included in the activity series of metal​

Answer» DESPITE being a non-metal, hydrogen is often included in the reactivity series since it helps COMPARE the reactivities of the metals. The metals placed above hydrogen in the series can displace it from ACIDS such as HCl and H2SO4 (since they are more reactive)
15.

Q.3. Which one of the following metals do not react with cold as well as hot water?(a) Na(c) Mg[NCERT Exemp.](b) Ca(d) Fe​

Answer» FE IS THE ANSWER Explanation:aluninium, ZINC and IRON don't REACT with hot water either cold waterI think its helps you mark me brain LIST
16.

The oxidation number of C atom in Ch2Cl2 CCl4 are respectively -2 and-4 ,0 and-4,0 and 4, 2 and 4

Answer»

tion:All the BONDING of c is ATTACHED with the pic and be CLEAR while asking question ...

17.

40.Name the compounds whose line formulae aregiven below:​

Answer» SEARCH on GOOGLE PLZ MAKE me BRAINLIEST
18.

KNO3 deduce the molecular mass?​

Answer»

101.1032 g/molAnswer and EXPLANATION:The MOLAR MASS of KNO3 is 101.1032 g/mol.Hope it's HELP you

19.

the bond between carbon atom 1 and 2 in the compound N triple bond C single bond C double bond CH2 involves the hybridised carbon as______​

Answer»

tion:HN=C−CH=CH 2 So, carbon atom (1)−sp 2 hybridised.Carbon atom (2)sp 2 hybridised.(1)Carbon attached to only SINGLE bond sp 2 (2)Carbon attached to single and DOUBLE bond sp 2 (3)Carbon attached to single and triple bond Hope it will work!

20.

If mass and velocity of a body is doubled how will its kinetic energy changes​

Answer» ANSWER:MOMENTUM is DIRECTLY PROPORTIONAL to velocity. If momentum of an object is doubled , but its MASS does not increase (so velocity remains below the speed of light) then its velocity is doubled. If the velocity is doubled, then the kinetic energy increases by four times.Hope this helped u ✌️✌️
21.

B) The alcohol obtained by the hydrolysis of oils and fats isa) glycolb) glycerolc) propanold) pentanol​

Answer» OPTION B.glycerol is the ANSWER
22.

If the value of azimuthal quantum number is 3, the possible values of magneticquantum number would be​

Answer»

value of AZIMUTHAL quantum number is 3, the possible values of magnetic quantum number would be : a) 0, 1, 2, 3 b) 0, -1, -2, -3 c) 0,+1,+2,+3 d)+1,+2,+3 aarathipnair is waiting for your HELPIF IT HELPS MARK ME AS BRAINLIEST

23.

42. One of the following has both positive and negative oxidation states A. FB. CIC. HeD. Na​

Answer» CL but not SHOR.
24.

Calculate no. of atom in each of followinga) 0.025 moles of carbonb).0 .025 moles of oxygen​

Answer»

calculate no. of ATOM in eachof followinga) 0.025 MOLES of carbonb).0 .025 moles of oxygen

25.

Write the law conservation of mass with example​

Answer»

just padhe the BHUL GAYE but

26.

Why to dry sodium and wrap it in a cotton before melting it in water

Answer»

tion:When sodium is ADDED to water, the sodium MELTS to form a BALL that MOVES around on the surface. It fizzes rapidly, and the hydrogen produced may burn with an orange flame before the sodium

27.

Reaction name and write down the mechanism for each chemical reaction ​

Answer»

The REACTION mechanism describes the SEQUENCE of elementary reactions that must occur to go from reactants to products. Reaction intermediates are formed in one STEP and then CONSUMED in a later step of the reaction mechanism. The slowest step in the mechanism is called the rate determining step or rate-limiting step.

28.

How will you explain line spectra of hydrogen on the basis of Bohr’s atomic model​

Answer»

In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. The motion of the electrons in the RUTHERFORD model was unstable because, according to classical mechanics and electromagnetic theory, any charged particle MOVING on a curved path emits electromagnetic radiation; thus, the electrons would lose energy and spiral into the nucleus. To remedy the stability problem, Bohr modified the Rutherford model by requiring that the electrons move in orbits of fixed SIZE and energy. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron JUMPS from one orbit to ANOTHER. The atom will be completely stable in the state with the smallest orbit, since there is no orbit of lower energy into which the electron can jump.

29.

EVALUATION oose the correct option.All mattera. has mass.b. occupies space.ahad. has mass and occupies space.c. either has mass or occupies space.​

Answer»

d. has MASS and OCCUPIES space.Mark me as BRAINLIEST..

30.

Round off 0.1576 up to one digit after decimal​

Answer»

anation:at first, the ROUND off of last digit..it will become 0.158 because 6>5 and 1 will get add in 7 and it become 8.after that by same STEP it will become 0.16 because the round off of 8 ..and at the last it will become 0.2 because round off of 6. And here is the ANSWER up to 1 digit after decimal

31.

Explain oxidation reaction on the based of loss of electrons​

Answer» REDOX (reduction-oxidation) reactions are those in which the oxidation states of the REACTANTS change. This occurs because in such reactions, ELECTRONS are always transferred between species. ... Oxidation is the loss of electrons or an increase in oxidation state by a MOLECULE, atom, or ion.
32.

Which is semi metal?? a) Phosphorus b) Lead c) Nitrogen d) Bismuth​

Answer» BISMUTH........ ....
33.

Explain the observation and their explanation in Rutherford's model of an atom. right postulates of structure of atom given by Rutherford ​

Answer»

Observations of Rutherford’s Alpha Scattering Experiment The observations made by Rutherford led him to conclude that: A major fraction of the α-particles bombarded towards the gold sheet passed through it without any DEFLECTION, and hence most of the SPACE in an atom is empty. Some of the α-particles were deflected by the gold sheet by very small angles, and hence the positive charge in an atom is not uniformly DISTRIBUTED. The positive charge in an atom is concentrated in a very small volume. Very few of the α-particles were deflected back, that is only a few α-particles had nearly 180° angle of deflection. So the volume occupied by the positively charged particles in an atom is very small as compared to the total volume of an atomRutherford ATOMIC Model Based on the above observations and conclusions, Rutherford proposed the atomic structure of elements. According to the Rutherford atomic model: The positively charged particles and most of the MASS of an atom was concentrated in an extremely small volume. He called this region of the atom as a nucleus. Rutherford model proposed that the negatively charged electrons surround the nucleus of an atom. He also claimed that the electrons surrounding the nucleus revolve around it with very high speed in circular paths. He named these circular paths as orbits. Electrons being negatively charged and nucleus being a densely concentrated mass of positively charged particles are held together by a strong electrostatic force of attractionExplanation:Postulates of Rutherford atomic model based on observations and conclusions. An atom is composed of positively charged particles. ... An atom has no net charge or they are electrically neutral because electrons are negatively charged and the densely concentrated nucleus is positively charged.

34.

To which orbit the electron in hydrogen atom will jump on observing 12.1 ev of energy. subject : chemistry​

Answer» TION:what are you ASKING I do not UNDERSTAND
35.

2methyl in tribal names​

Answer»

2-Methylheptane | C8H18 | CID 11594 - structure, chemical NAMES, physical and ... 2-Methylheptane is an alkane. CHEBI.

36.

3. A child wanted to separate the mixture of dyes constituting a simple of ink. He marked a linea kept a drop of ink on filter paper and placed the filter paper in a glass containing water as showthe figureThe filter paper was removed when the water moved near the top of the filter paperc) Suggest one more application of this technique​

Answer» TION:its of MATHS or snglish
37.

Show the distribution of electrons in oxygen atom using orbital diagram​

Answer» UR CORRECT ANSWER
38.

A white amorphous powder emits a greenish yellow gas having a smell of chlorine. It is used to remove yellowness of white clothes in laundries. Identify the powder. Write the chemical equation involved in its preparation.​

Answer» SORRY I can't UNDERSTAND
39.

What is atomicity molecules of o2​

Answer»

it's automatically o and ATOMS will ALSO be oExplanation:pls MARK me as brainliest...

40.

which of the following is not the isomers of pantene are n-pantene , 2,2 dimethyl 1 propane, 2,3 -dimethyl 1 butain and 2-methyl 1 butain

Answer»

I HOPE it MATCHED with your answer.Explanation:2,3dimethyl 1 BUTANE

41.

Order of reactivity of halogen acids in the formation of alkyl halide from ether is​

Answer»

Carbon - oxygen BOND in ethers can be cleaved by halogen acids, sulphuric ACID, phosphorouspentachloride etc. The cleavage of C−O bond takes place under DRASTIC conditions with excess of hydrogen HALIDE, R−O−R+2HX→HX→2RX+H 2 O. Explanation:HOPE it was helpful

42.

Find the amount of NH3 gas produced when 17.5gm of nitrogen reacts with hydrogen gas . Find the amount of NH3 gas produced when 17.5gm of nitrogen reacts with hydrogen gas

Answer»

Hi here is your ANSWER mass of hydrogen -> 3 gmoles of hydrogen -> 3/2 = 1.5mass of NITROGEN -> 7 gmoles of nitrogen -> 0.25nowN2 + 3H2 -> 2NH31 mole nitrogen -> 2 mole NH30.25 mole nitrogen -> 0.5 mole NH3since there is Nitrogen as limiting reagenttherefore only 0.5 mole NH3 is formed and 0.75 mole of Hydrigen is leftso mass of 0.5 NH3 = (14 + 3)/2 = 17/2 = 8.5 gExplanation:HOPE it helps you please FOLLOW, like and rate the answer.

43.

(b) nitroBased on the nature of metal-carbon bond, how willyou classify organometallic compounds? Discussthe it-acceptor behaviour of carbon mono-oxide.​

Answer»

you can see the attached FILE is SCANNED IMAGE in PDF format and send it to the attached file is scanned image in PDF format and send it to the attached

44.

Which acid is used for explosive???​

Answer» PICRIC acidExplanation:By far the greatest use has been in MUNITIONS and explosives. Explosive D, ALSO known as Dunnite, is the ammonium salt of picric acid—= more powerful but less stable than the more COMMON explosive TNT (which is produced in a similar process to picric acid but with toluene as the feedstock).Hope it helps!!MARK Me as Brainliest Please!!!
45.

solve it and show the steps right answers would be marked as brainliest and irrelevant answers will be reported. ​

Answer»

0.219 -1 cmExplanation:R=1500 Ω (RESISTANCE) k=1.46×10  -4 S cm-1T = 298KWe will use the formula,   k=Gx ​where k is conductivityG is   1/Rx is cell constant1.46×10  -4   = 1/1500  *  x1.46 X 10 -4  x 1500  = xx = 0.219 -1 cmThe cell constant is 0.219 -1 cmKindly mark me as BRAINLIEST........plzzzzzzzzGive me 10 thanks plzzzzzz​

46.

Which of the following are not minerals of aluminium​

Answer»

you did not GIVE the OPITIONS

47.

show that at constant temperature and pressure chemical potential of i gas in the mixture is less than the chemical potential of i gas in pure state ​

Answer»

the VALUE of the chemical potential of a substance depends not only upon temperature, but upon pressure as WELL. MOREOVER, the potential generally INCREASES when the pressure increases.Kindly MARK me as brainliest...plzzzhope u like my answer...Hope it will be useful

48.

Formation of NaCl with atomic structure ​

Answer»

Ionic BondsExplanation:The Lewis STRUCTURE for the Salt NACL, shows TWO ions which have their (Now) outer shells of ELECTRONS filled with a complete OCTET. In the case of the sodium cation, the filled shell is the outermost of the 'core' electron shells.Hope this answer is helpful for you.Thank you.PLEASE MARK ME BRAINLIEST

49.

5. A child wanted to separate the minture or dyes constituting o sumple of ink. He marked a line and kept a drop of ink on filter paper and placed the filter paper in a glass containing water as shown inthe figureThe filter paper will removed when the water moved near the top of the filter paper.a) What would you expect to see, it mk contains three different colored components?b) Name the technique used by the child.c) Sugest one more application of this technique,​

Answer» TION:The colour component which is more soluble in water dissolves FIRST, rises faster and produces a colour band (SPOT) on the paper at a higher position. The less soluble colour components dissolve a little later, rise slower and form COLOURED bands at lower heights. In this way, three different bands will be observed.ChromatographyTo separate the pigments PRESENT in chlorophyll.
50.

The nomenclature of ICl is iodine chloride because: (A) Size of I < size of Cl(B) Atomic number of I > Atomic number of Cl(C) E. N. of I < E. N. of Cl(D) E. A. of I < E. A. of ClNOTE: Plz explain the answer briefly. ​

Answer»

because IODINE loses electron sort of dipole-dipole COVALENT bonding d) is CORRECTAS cl has max EA so more energy is RELEASED