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.

How do you find h30 from pH?

Answer»

The HYDRONIUM ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = ANTILOG (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34? On a CALCULATOR, calculate 10-8.34, or "INVERSE" log ( - 8.34).

2.

How do you find H+ from OH?

Answer» ANSWER is H2O this is the CORRECT answer
3.

How do you convert gas laws?

Answer» SORRY I don't KNOW the ANSWER
4.

What is a real life example of combined gas law?

Answer»

- The combined gas law has practical applications in everyday life. It applies whenever the amount of gas remains CONSTANT, but pressure, volume, and temperature CHANGE. For EXAMPLE, the law predicts the behavior of cloud formation, refrigerators, and AIR conditioners.Necessary:- To mark me as BRAINLIEST and thanks me if you like my answer also vote me as per ur choice.Hope my answer will be helpful to you!!!!!

5.

How do real and ideal gases differ?

Answer»

Real gas and Ideal gas. As the particle size of an ideal gas is extremely small and the mass is ALMOST zero and no VOLUME Ideal gas is also considered as a POINT mass. The MOLECULES of real gas occupy space though they are small particles and also have volume.Explanation:

6.

What are the 6 gas laws?

Answer»

the ANSWER. byeExplanation:BRAINLESS

7.

Is water and ice an allotrope?

Answer»

I THINK noExplanation:WATER and ICE AARE not एलोट्रोप

8.

What stone is harder than diamond?

Answer» NONE of the STONE is stonger
9.

What is coke pure carbon?

Answer» DIAMOND is the CORRECT ANSWER
10.

at a gibmven temperature, which of the following will have maximum osmotic pressure? 1) 1M NaCl 2) 1M NaSO4 3) 1M Al(SO4)3​

Answer» L(SO4)3.hi is RIGHT ANSWER MARK IS BRAINLIEST ANSWER AND LIKES
11.

The properties of the system whose valuse depend upon the amount of the substance present in the system are called as_______​

Answer»

your ANSWER is COLLIGATIVE PROPERTIES.

12.

Which one of the following solutions have the same concentration as 2.5 M NaCl solution ( Na = 23 , K=39 , Cl = 35.5 , O = 16 , H =1 )?​

Answer»

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13.

What is pH and pOH scale?

Answer»

of PH SCALE is 0 to 14

14.

What is Antilog formula?

Answer»

The FORMULA for SOLVING this problem is y = B3, where b is the logarithmic base, and y is the RESULT.

15.

What is the molecular weight of a gas that diffuses 25 times as fast as helium?

Answer»

: -64.0 g/mol Explanation:64.0 g/mol is the molecular WEIGHT of a GAS that DIFFUSES 0.25 TIMES as fast as helium.

16.

Why do allotropes exist?

Answer»

Enantiotropic allotropes have several forms, each of which is STABLE under different SETS of conditions. It is possible to convert ONE form into ANOTHER form by change these conditions (such as temperature and pressure). The elements carbon, oxygen, sulfur, TIN and phosphorus all have allotropic forms.

17.

How do you solve pOH and pH problems?

Answer»

In order to calculate the pH, TAKE the negative log of the hydronium ion concentration. To find the POH, SIMPLY subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration. To find the pH, simply subtract pOH from 14.

18.

What are the applications of Graham's law of diffusion?

Answer»

tion:It helps in the separation of GASES having DIFFERENT densities. It helps in the separation of isotopes of CERTAIN elements. It helps in determining the MOLECULAR weight of an unknown gas by USING the rates of diffusion/effusion.

19.

What is the pOH if the pH is 4?

Answer»

of 4 is ACID because 4 is a ACIDIC PH no.

20.

How is Charles law used?

Answer» HOPE it HELPS YOUPLEASE MARK me as braein LIST
21.

What is partial pressure MCAT?

Answer»

ssure of the GAS in a MIXTURE of GASES

22.

What are 2 allotropes of silicon?

Answer» TION:Two allotropes of silicon EXIST at room temperature: amorphous and CRYSTALLINE
23.

Is carbon monoxide called coke?

Answer»

yesExplanation:At temperature 1000degree CELSIUS and above, coke carbon REACTS with carbon dioxide to PRODUCE carbon monoxide , gasifying the coke in process.this weakens the coke structure CAUSING it to break down within furnace under mechanical stress HOPE THIS HELPS YOU

24.

Which element has most allotropes?

Answer» TION:carbon, OXYGEN, sulphur,tin and phosphorus HOPE THIS HELPS YOU
25.

Which one contains larger number of hydrogen ion 10-4 HCL or 10-4 HCL

Answer»

ntain same no. of HYDROGEN

26.

What is mineral acid?​

Answer»

A MINERAL acid is defined as a water-soluble acid derived from inorganic minerals by chemical reaction as. OPPOSED to organic acids (e.g. acetic acid, formic acid). CHEMICALS that fall under, but are not limited to, this SOP include: • BORIC acid (CAS No.

27.

Write formula of the following. a)Hydrogen peroxide b)sodium oxide c)Sodium hydroxide d)Potassium permanganate​

Answer»

a) H2O2 b) Na2Oc) NaOHd) KMnO4Explanation:I HOPE this answer HELP you and mark it as brainliest.

28.

1a Complete the Lewis structure below by adding multiple bonds and lone pairs to this simple organic molecule as needed: (Draw the correct Lewis structure in a separate sheet of paper and insert the image below:) [2] O O 1 C --- С H 0 0 H Ans: 1b How many sigma-bonds, pi-bonds and lone pairs are present in the compound in Question 1a above? [1]​

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29.

Write balanced equations for the preparation of each of the following salts. Lead [II] sulphate from Lead nitrate.​

Answer»
30.

On boiling temperature of water increases from 40 degree Celsius to 100 degree Celsius , what is the change in temperature in Fahrenheit?​

Answer» HI BRO gddghvcghhbbnkk
31.

How do you find the pH of HCl?

Answer»

The pH of HCL will be 1.000 Explanation:SINCE HCl is a strong acid, it completely ionizes, and the pH of HCl in solution can be found from the concentration (molarity) of the H+ IONS, by definition EQUAL to 0.100 M. (The conjugate base of the acid, which is the chloride ion Cl–, would ALSO have a concentration of 0.100 M.) The pH is thus –log(0.100) = 1.000.I hope this helps.

32.

What is constant about the equilibrium constant?

Answer» HOPE it HELPS YOUPLEASE MARK me as braein LIST
33.

How do you find the final pressure in combined gas law?

Answer»

- The COMBINED gas LAW examines the behavior of a constant AMOUNT of gas when pressure, volume and/or temperature is allowed to change.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaThe combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.Vi = initial volume.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.Vi = initial volume.Ti = initial absolute temperature.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.Vi = initial volume.Ti = initial absolute temperature.Pf = final pressure.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.Vi = initial volume.Ti = initial absolute temperature.Pf = final pressure.Vf = final volume.The combined gas law examines the behavior of a constant amount of gas when pressure, volume and/or temperature is allowed to change....The Combined Gas Law FormulaPi = initial pressure.Vi = initial volume.Ti = initial absolute temperature.Pf = final pressure.Vf = final volume.Tf = final absolute temperature.Necessary:- To mark me as BRAINLIEST and thanks me if you like my answer also vote me as PER ur choice.Hope my answer will be helpful to you!!!!!!!

34.

What Is percent dissociation?

Answer»

tion:PERCENT DISSOCIATION is symbolised as a (alpha ) and REPRESENTS the ratio of the concentration of dissociated hydrogen {H +} to the concentration of the undissociated species{HA}

35.

Who proposed the ideal gas law?

Answer» EMILE Clapeyron first PROPOSED the ideal gas LAW in 1834.Explanation:HOPE it HELPS youplease mark me as braein list
36.

How do combined gas law problems work?

Answer»

bined gas law combines the THREE gas laws: Boyle's Law, CHARLES' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the ABSOLUTE TEMPERATURE of a gas is equal to a constant. When Avogadro's law is added to the COMBINED gas law, the ideal gas law results.

37.

How do you identify allotropes?

Answer»

tion:Allotropes are different forms of the same element. Different bonding arrangements between atoms result in different STRUCTURES with different chemical and PHYSICAL properties. Allotropes occur only with certain elements, in GROUPS 13 through 16 in the PERIODIC Table.Allotropes are different structural forms of the same element and can exhibit QUITE different physical properties and chemical behaviours. The change between allotropic forms is triggered by the same forces that affect other structures, i.e., pressure, light, and temperature.

38.

What is the full name of pH?

Answer»

Potential of Hydrogen.Explanation:The symbol for the logarithm of the RECIPROCAL of hydrogen ion concentration in gram atoms PER liter, used to express the acidity or alkalinity of a solution on a scale of 0 to 14, where less than 7 represents acidity, 7 NEUTRALITY, and more than 7 alkalinity.I hope this helps.

39.

Why is carbon melting point so high?

Answer»

- Each carbon ATOM is covalently bonded to four other carbon atoms. A lot of energy is needed to separate the atoms in diamond. This is because covalent bonds are strong, and diamond contains very MANY covalent bonds. This MAKES diamond's melting point and boiling point very high.Necessary:- To mark me as brainliest and thanks me if you like my answer also VOTE me as per ur choice.Hope my answer will be helpful to you!!!!!!!

40.

Why is the combined gas law important?

Answer»

- The ideal gas law is a valuable TOOL in understanding state relationships in GASEOUS systems. For example, in a system of constant temperature and pressure, the addition of more gas molecules results in INCREASED volumes Necessary:- To mark me as brainliest and thanks me if you like my answer also vote me as PER ur choice.Hope my answer will be HELPFUL to you!!!!!!!!

41.

Why is diamond so hard chemistry?

Answer»

Due to the presence of covalent bonds, diamonds are hard.Explanation:The heat and pressure causes the diamonds molecules to change so that they’re so close together, the molecules can’t MOVE (known as covalent bonding). The CLOSENESS of these molecules FORMS a rigid bond, therefore making the diamond hard.I HOPE this helps.

42.

Why is diamond purest form of carbon?

Answer»

Diamond is CONSIDERED the purest type of carbon, since the diamond's structure is homogeneous and STABLE OVERALL. Diamonds are PURER than graphite as the diamond carbon atoms are more closely bound than in graphite as a result of which impurities have trouble entering the diamond LATTICE.

43.

When the crystals of FeSO4 are heated the residue obtained is

Answer»

On heating ferrous sulphate it decomposes into FERRIC OXIDE Fe2O3 (RESIDUE) which is red in colour.

44.

What Is Double Displacement Reactions??​

Answer»

ble-replacement reaction generally takes the form of AB + CD → AD + CB where A and C are positively-charged cations, while B and D are negatively-charged anions. In a double replacement REACTIONS, typically one of the products is a precipitate, a GAS, or a molecular compound.✨✌✨I know how to hack someone id in brainly do you now ✨✌

45.

The viscosity of water is 1 cp. Express the viscosity of water in: (a) Pa. sec (b) stoke

Answer»

(a) The VISCOSITY of water at a TEMPERATURE of 20 DEGREES CELSIUS is approximately 0.01 poise or 10-3 Pa. s (Pascal SECONDS).

46.

How do you measure pH in water?

Answer»

7Explanation:PH of WATER is 7, that is neutral.please MARK me as the BRAINLIEST

47.

Which statement is correct for ionic bond?

Answer»

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48.

Is dissociation constant and ionisation constant same?

Answer»

- For an aqueous solution of a weak ACID, the dissociation constant is CALLED the acid ionization constant (KA). Similarly, the equilibrium constant for the reaction of a weak base with water is the base ionization constant (Kb).Necessary:- To mark me as brainliest and thanks me if you like my answer also VOTE me as per ur choice.Hope my answer will be helpful to you!!!!!!!!

49.

How do you calculate combined gas law?

Answer»

The combined gas law combines the three gas laws: Boyle's Law, CHARLES' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law results. Unlike the named gas laws, the combined gas law doesn't have an official discoverer. It is simply a combination of the other gas laws that works when everything except temperature, pressure, and volume are held constant.There are a couple of common equations for writing the combined gas law. The classic law relates Boyle's law and Charles' law to state:PV/T = kwhere P = pressure, V = volume, T = absolute temperature (Kelvin), and k = constant.The constant k is a true constant if the number of moles of the gas doesn't change. Otherwise, it varies.Another common formula for the combined gas law relates "before and after" CONDITIONS of a gas:P1V1 / T1 = P2V2 / T2ExampleFind the volume of a gas at STP when 2.00 liters is collected at 745.0 mm Hg and 25.0 degrees Celsius.To solve the problem, you first need to identify which formula to use. In this case, the question asks about conditions at STP, so you know you're dealing with a "before and after" problem. Next, you need to understand STP. If you haven't memorized this already (and you PROBABLY should, since it appears a lot), STP refers to "standard temperature and pressure," which is 273 Kelvin and 760.0 mm Hg.Because the law works using absolute temperature, you need to convert 25.0 degrees Celsius to the Kelvin scale. This gives you 298 Kelvin.At this point, you can plug the values into the formula and solve for the unknown. A common mistake some people make when they're new to this kind of problem is confusing which numbers go together. It's good practice to identify the variables. In this problem they are:P1 = 745.0 mm HgV1 = 2.00 LT1 = 298 KP2 = 760.0 mm HgV2 = x (the unknown you're solving for)T2 = 273 KNext, take the formula and set it up to solve for the unknown "x," which in this problem is V2:P1V1 / T1 = P2V2 / T2Cross-multiply to clear the fractions:P1V1T2 = P2V2T1Divide to isolate V2:V2 = (P1V1T2) / (P2T1)Plug in the numbers and solve for V2:V2 = (745.0 mm Hg · 2.00 L · 273 K) / (760 mm Hg · 298 K)V2 = 1.796 LReport the result using the correct number of significant figures:V2 = 1.80 LApplicationsThe combined gas law has practical applications when dealing with gases at ordinary temperatures and pressures. Like other gas laws based on ideal behavior, it becomes less accurate at high temperatures and pressures. The law is used in thermodynamics and fluid mechanics. For example, it can be used to calculate pressure, volume, or temperature for the gas in clouds to forecast weather.Explanation:Give a star mark me as brainlist.

50.

Why is Graham's law important?

Answer»

- GRAHAM's law provides a basis for separating isotopes by diffusion—a METHOD that came to play a crucial role in the development of the atomic bomb. Graham's law is most accurate for MOLECULAR effusion which involves the movement of one gas at a time through a hole.Necessary:- To mark me as BRAINLIEST and thanks me if you like my answer also vote me as PER ur choice.Hope my answer will be helpful to you!!!!!!!