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.

Group 2 sort note chemistry

Answer» END, Here is your answer-The group 2 belongs to S-block in the MODERN periodic table. It consists Alkaline earth metals. In this group Be , MG , CA , Sr, Ba, RA are included.Hope it will help you
2.

Write any three differences between isotopes and isobars

Answer»

n :-WRITE any three differences between isotopes and isobars .ANSWER :-(i) Isotopes are atoms of the same element having the same atomic NUMBER but DIFFERENT mass number .(ii) Isobars are atoms of different elements having the same mass numbers but different atomic number(i) Isotopes have same number of electrons .(ii) Isobars have different number of electrons .(i) Isotopes have same mass number .(ii) Isobars have different mass number .(i) Isotopes - Eg : hydrogen isotopes.(ii) Isobars - Eg : MAGNESIUM , sodium .Hope its helpful !__________________________________________________________________

3.

What do you observe when blue vitriol is heated?

Answer»

mula of BLUE vitriol is CuSO₄.5H₂O .The water molecules are in loose chemical combination with the substance.Hence this is TYPICALLY CALLED water of crystallization.What do we observe when this substance is heated ?The substance was originally blue in COLOUR.If we heat it , it becomes white powder.This is shown in the attachment.As the substance loses its water of crystallisation , its colour changes from blue to white.

4.

Under what condition does oxidation reaction called combustion reaction

Answer» E SUPPLY of AIR is not LIMITED
5.

How to distinguish between saturated and unsaturated hydrocarbons using a test?

Answer» USE BAEYER's Reagent, that's is alkaline SOLUTION of KMNO4.
6.

2 tests to distinguish between alkanes and alkenes

Answer»

only 1 SORRY that is BROMINE TEST

7.

सबसे हल्का धातु कौन सा है ?

Answer»

्का धातु है => लिथियम।

8.

What is tailing of Mercury.how is it removed

Answer»

of mercury (a METAL) is its innate PROPERTY. ... It can be removed by adding some impurities in it such as other metal. When ozone is passed through mercury, it loses its meniscus and sticks to the glass DUE to the formation of mercurous oxide. This is called tailing of mercury. MARK AS BRAINLIEST

9.

Name the process of separating benzoic acid and naphthalene.

Answer»

The PROCESS of SEPARATING BENZOIC acid and napthalene is Sublimation.Hope this answer helps...

10.

Arrange the three isomers of pentane in increasing order of their boiling points.

Answer» EE ISOMERS of PENTANE in increasing ORDER of their boiling points are as follows I have written it by myself PLEASE let me know if it will help you
11.

Chemistry is sometimes to difficult right !! so to those toppers in chemistry pls solve this for me can you !? just tell me the IUPAC name and I will mark it as a brainliest answer!!

Answer» ETHANOIC ACID
12.

Hi guys !! I have a doubt ( again ,yes) what's the IUPAC name of this I mark it as brainliest one pls tell me

Answer» METHYL butaneplzz MARK BRAINLIEST
13.

Hi guys! look here! it's me again ....with a chemistry doubt .....so pls tell me if this structure is correct? you will do that right?! ......you don't have to type too much just tell me if it's correct!! ........the best answer gets the brainliest mark ! Thank you ,1604( p.s please answer it for me )

Answer»

orrect STRUCTURE GOOD JOB GIVE me BRAINLIEST

14.

Hola friends!! yes a doubt again! pls solve for this ...tell the IUPAC name ....I would be so grateful to you if you do so .....if that's not enough .....I will mark the best answer as a brainliest one ! for encouragment......so pls solve this for me Thanks,1604.

Answer»

methyl PENTANE. is the IUPAC name of GIVEN STRUCTURE.

15.

Structure of rhombic sulphur

Answer»

s LIKE a CRYSTAL or DIAMOND

16.

Reaction bw acid and base where it doesn't produce water

Answer»

e!!________________________'When an acid and a BASE are PLACED together, they react to NEUTRALIZE the acid and base properties, producing a salt. The H(+) cation of the acidcombines with the OH(-) anion of the base to form water. ================================

17.

Odd man out in nitric acid,citric acid,formic acid,lactic acid

Answer» ACID is odd from the GROUP because it the only mineral acid in the group and all the other acids are ORGANIC acids
18.

Write the formula of chloride of eka silicon and eka aleminium the element predicate by mendleev?

Answer»

rantrichlorideGCl3 germaniumchloride

19.

What do you mean by biological oxygen demand

Answer» ICAL Oxygen DEMAND (BOD, also called Biological Oxygen Demand) is the amount of DISSOLVEDOXYGEN needed (i.e. demanded) by aerobic biological organisms to break down organic material present in a given water sample at CERTAIN temperature over a specific time period.
20.

Which gas is usually liberate when acid react with metal and illustrate with ex and how the presence of gas test?

Answer» HELPS!!!THANKS
21.

The oxidation reaction of carbon to carbon monoxide may be used to reduce

Answer»

dation REACTION of CARBON to carbon monoxide is used to REDUCE ferric oxide and zinc oxide.

22.

Whichgas is produced when magnesium ribbon is burnedchemical equation for it??

Answer» N GAS is produced when magnesium RIBBON is burnt.
23.

An element with 2 valence electrons and 4 energy levels

Answer»

is the ELEMENT

24.

What do you understand by greenhouse effect ? What are the major greenhouse gases?

Answer»

ouse effect can be defined as the warming of the earth or GLOBAL warming due to the absorption of solar energy by co2 molecules and H2O vapour present NEAR the earth's surface and then it's coming BACK RADIATION back to the earth

25.

Which of the method cannot be used to determine accuracy?

Answer»

ytical chemistry, the term 'accuracy' is used in relation to a chemical MEASUREMENT. The International Vocabulary of Basic and General Terms in Metrology (VIM) defines accuracy of measurement as... "CLOSENESS of the agreement between the result of a measurement and a true value." The VIM reminds us that accuracy is a "qualitative concept" and that a true value is indeterminate by nature. In theory, a true value is that value that would be obtained by a perfect measurement. Since there is no perfect measurement in analytical chemistry, we can never know the true value. Our inability to perform perfect MEASUREMENTS and thereby determine true values does not mean that we have to give up the concept of accuracy. However, we must add the reality of error to our understanding. For example, lets call a measurement we make XI and give the symbol µ for the true value. We can then DEFINE the error in relation to the true value and the measured value ACCORDING to the following equation: If this helps then great or please elaborate !

26.

What will be the ph value of 0.05 m ba(oh)2 solution?

Answer»

will be 13. SOLUTION: Ba(OH)2 - Ba2+ 2OH-0.05 M X 2= 0.10M POH= -log(0.10 M) = 1.00pH = 14-pOH= 14 - 1.00=13PLEASE MARK IT AS BRAINLIST

27.

When 36g of reacted with Fe it gave 90.0g of . What is the % yield of the reaction?

Answer» 10 + NITRATE + HYDROCHLORIC ACID
28.

Can anyone answer this three M/C/Q please...........

Answer» ER is 6 A7 B......
29.

What is a saturated solution?

Answer»

m saturated solution is used in chemistry to define a solution in which no more SOLUTE can be dissolved in the solvent. It is understood that saturation of the solution has been ACHIEVED when any ADDITIONAL substance that is added results in a solid precipitate or is LET off as a gas.

30.

What is soil air? For class 7th

Answer» R is a continuation of the atmospheric air. ... Composition ofSoil Air: The soil air contains a number of gases of which nitrogen, oxygen, carbon DIOXIDE and WATER VAPOUR are the most important. Soil air constantly moves from the soil pores into the atmosphere and from the atmosphere into the pore space.
31.

What is the relationship between density charl's law boyle's law

Answer»

itself can be stated as FOLLOWS: For a fixed amount of an ideal gas KEPT at a fixed temperature, PRESSURE and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is HELD constant.hope it helps

32.

Structural formula of 3 chain isomers of C6H14

Answer» SWER is in SCIENCE BOOK of 10TH CLASS
33.

Name.The alkali metal which acts a strong reducing agent in aqueous

Answer»

e ionization energies we might expect lithium to be the weakest of the alkali metals as a reducing AGENT in water. HOWEVER, the STANDARD reduction potentials indicate that it is the strongest. This reversal results mainly from the very large energy of hydration of the small LI+ ion. Please note that the reaction takes place in water and not in a gas PHASE. What this means is that because of its relatively high charge density, the Li+ ion very effectively attracts water molecules. A large quantity of energy is released in the process, favoring the formation of the Li+ ion and making lithium a strong reducing agent in aqueous solution.

34.

What is sedimentation? How are the finer particles of clay made to settle down quickly.

Answer»

hod of separating insoluble impurities in a LIQUID by ALLOWING them to SETTLE down is CALLED sedimentation.

35.

what happens when aqueous solution of sodium sulphate and Barium Chloride are mixed economist equation from the reaction with state symbols name and define the types of chemical reaction involved in the above change

Answer»

+ BACL2 - BACK + ba2so4double DISPLACEMENT REACTION

36.

Extraction of casein from milk viva questions with answer

Answer»

Extraction of CASEIN from MILK is DONE by adjusting the pH of the milk to 4.6, its ISOELECTRIC point. Explanation:At isoelectric point the main residue which we get is casein

37.

Write the molecular formula of first two member of homologous series having funtional group-cl

Answer»

h5clAre the TWO MEMBERS of FUNCTIONAL GROUP CHLORINE

38.

Rate constant for a reaction H2+I2____2HI is 49, then rate constant for reaction 2HI_____H2+I2 is

Answer» MAY HELP you !!!!!
39.

Please answer the 4th and 5th questions

Answer»

A and B are INCORRECT and C is correct5) (D) A is incorrect, R is CORRECT. Hope it may help you !!!!!

40.

Answer for the question 22

Answer» IONS derived from different atoms are isoelectronic species, then they all have same number of electrons in their electronic SHELLS and will have got same electronic configuration but their NUCLEAR charge will differ because of their DIFFERENCE in number of protons in the nucleus. With increase in number of protons in the nucleus the electrons are more attracted towards nucleus thereby causing the decrease in ionic radius. On this principle our problem will be solvedNa+ < O²-I THINK the answer should be 3Å
41.

What happens when sodium Borohydride is treated with Iodine

Answer»

iodine is reacting with onesodium BOROHYDRIDE, so you GET borane, sodium iodide, and hydrogeniodide. Then hydrogen iodide is reacting with another sodium borohydride, so you get another borane and another sodium iodide, plus some hydrogen. All that borane is actually the stuff that reduces the ACID to alcohol

42.

What is formula of nuclic acid?

Answer»

tructure. ... Each nucleotide CONSISTS of a nitrogen-containing AROMATIC base ATTACHED to a pentose (five-carbon) sugar, which is in turn attached to a PHOSPHATE group. Each nucleic acid contains four of five possible nitrogen-containing BASES: adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U).

43.

Why electron gain enthalpy decreases from chlorine to iodine?

Answer» E!!! This is because CHLORINE is more ELECTRONEGATIVE as COMPARED to IODINE...
44.

Molten aluminium bromide is a poor conductor of electricity. Explain.

Answer» ALUMINIUM bromide is a covalent compound that is why MOLTEN aluminium bromide is a POOR conductor of electricity..HOPE IT HELPS
45.

Drops of water are seen on the cold water bottle

Answer»

around the WATER BOTTLE CONTAINS moisture (water vapors) when they came in contact with the cool SURFACE of the bottle they condense (cool down) and form water droplets on the bottle

46.

Wha t is an armature? What is its advantage (answer)

Answer»

trical ENGINEERING, an armature is the power-producing component of an electric machine. The armature can be on either the rotor or the stator of the electric machineAdvantages of Rotating FIELD with Stationary Armature. Rotating field is comparatively light and can run with high speed. High VOLTAGE can be GENERATE due to high speed and there is very little difficulty in providing high voltage on a stationary PART than a moving part.

47.

What is meant by Marble Cancer I will mark you as BRAINIEST FOR REAL.!!!!

Answer»

ate!Here's your answer Statues and structures made up of marble, limestone e.t.c are SLOWLY CORRODED as ACIDIC rain water FALLS on them. Both sulphuric and nitric acid dissolve marbles from salt Acid rain corrods the marble of MONUMENT and this phenomenon is known as marble cancerHope it helps you ✌✌

48.

Complete the chemical reaction below and explain ethanol + sodium

Answer»

+ SODIUM -- C2H5ONA + H2

49.

Chemial combination reaction

Answer»

reactions are CHEMICALLY. combinated reactions. PLEASE TAG as BRAINLEIST and follow

50.

List the changes that take place during the chemicla effect of current

Answer»

the CHEMICAL effects of electric current are the following:        •  Formation of bubbles of a gas on the ELECTRODES        •  Deposition of metal on electrodes        •  CHANGE in COLOUR of solutionsplz plz mark me BRAINLIST,.....!!!