52639 + Interview Questions in Secondary School in Chemistry

1.	From 200 mg of CO2 , 10^21 molecules are removed . How many mole of CO2 are left?
Answer» Here is the ANSWER..... HOPE this will HELP you.....

Discussion

2.	Which species has 16 protons 16 neutrons and 18 electrons?
Answer» Dually ionised Silicon (S -2) No of PROTONS = Atomic NUMBER(Silicon = 16) No of electrons = Atomic number (16) + 2 electrons (ANION) = 18 No of neutrons= Mass number - Atomic Number = 32-16= 16

Discussion

3.	What is the mass of 0.5 mole of ozone molecule
Answer» OZONE molecule is O3 Molar MASS of O3 = 48 N = m/ M 0.5 = m / 48 m = 48 × 0.5 = 24 m = 24g Thanks

Discussion

4.	Explain the role of significant figuretry to explain in your own words !! ( 11th chemistry ) avoid spam ❎❎❎
Answer» Hey mate ...... here's UR ANSWER...... HOPE it HELPS...☺️❤️

Discussion

5.	given that in the hydrogen atom the transition energy for n= 1 and n =2 rydberg states is 10.2 electron volt.the energy for the same transition in be3+ is
Answer» HOPE it will HELP U

Discussion

6.	A decinormal solution of nacl develops the osmotic pressure of 4.6atm at 300k calculate degree of disassociation qeustion no.
Answer» A DECINORMAL SOLUTION of nacl develops the OSMOTIC PRESSURE of 4.6atm at 300k calculate degree of disassociation qeustion no. - 3465329.

Discussion

7.	Name the product obtained on cathode during electrolysis of water
Answer» METAL is OBTAINED on CATHODE.

Discussion

8.	Hey guys....Need A Logical Answer of my question...My Question is -:WHEN WE CUT ONIONS. WHY OUR EYES GET IRRITATION..REQUIRED BEST ANSWER__________
Answer» Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal GLANDS so they release tears. SCIENTISTS USED to blame the ENZYME allinase for the INSTABILITY of substances in a cut onion.

Discussion

9.	State the effect of temperature on diffusion
Answer» GENERALLY the rate of diffusion INCREASES with INCREASE in temperature

Discussion

10.	An aquaus solution has molality 11.11 hence , mole fraction of solute in the solution is
Answer» An aqueous solution has morality equals to 11.11 that means 11.11 moles of solute are present in 1 kg or 1000 gm of solvent according to formula of molality. As what is solvent no mentioned here we will consider water as solvent OKK. as 18 gm of water constitute 1 mole of water then 1000 gm of water will constitute 55.55 moles of water. such Now we KNOW no. of moles of both solute and solvent let's put these VALUES in formula of molefraction Molefraction = no. of moles of solute / (no. of moles of solute + no. of moles of solvent) hence ,,molefraction = 11.11 /(11.11 +55.55 ) =11.11/ 66.66=0.167 I hope you GOT it well

Discussion

11.	Chlorine gas +sodium metal-sodium chloride
Answer» ★Ello ★ here is your answer !! formula of clorine = Cl Sodium metal = Na sodium CHLORIDE = NaCl hence , here is your answer => 2 Na + Cl2 ===>2 NaCl for BALANCE we MULTIPLY 2 moles of Sodium and 2 moles of NaCl ( sodium chloride ) this is ionic. BOND , formed by exchange of Ions hope it helps you DEAR !! wanna to more inbox me !! $thanks$

Discussion

12.	Why do uncharged atom never crystallise in simple cubic
Answer» UNCHARGED molecules and atoms are PACKED more efficiently in CLOSED - packed structure. Hence these uncharged molecules and atoms do not crystallize in simple cubic structures. HOPE IT HELPS U... PLZ.. MARK AS A BRAINLISTS..

12.

Why do uncharged atom never crystallise in simple cubic

Answer»

UNCHARGED molecules and atoms are PACKED more efficiently in CLOSED - packed structure. Hence these uncharged molecules and atoms do not crystallize in simple cubic structures.

HOPE IT HELPS U...

PLZ.. MARK AS A BRAINLISTS..

Discussion

13.	Which of the following compound does not exist? A. Cul2 B. Cu2I2 C. Cucl2 D. CuCl
Answer» The COMPOUND Cu2l2 does not EXIST

Discussion

14.	How does water kept cool in an earthen pot become cool during summers
Answer» Earthen pot water GET cool Because, this is the process of evaporation. Pot contains small pores or holes. Cooling is caused by evaporation.When water evaporate from small pores it GETS cool. I hope it HELPS u tq

Discussion

15.	If l=1 for an atom then the number of orbitals in its sub-shell is:
Answer» I THINK there are 3orbitals

Discussion

16.	Terylene is a popular form of
Answer» TERYLENE IS A POPULAR FROM OF POLYMERS AND PLASTIC DEAR MATE IF ITS HELP PLEASE MARK BRAINLIST

Discussion

17.	With which element does the element magnesium resemblea. N b. Bec. Ard. Cl
Answer» Among these elements Nitrogen, Beryllium Argon ,Chlorine . The element Magnesium resemble the element Beryllium (Be). Reason / Explanation :- Magnesium lie in the second group (Alkali earth METALS) , Where in the same group elements Beryllium lies too. All the elements ( Including Mg & Be) of the Alkali Earth Metals have the same characteristics and they resembles each other in various physical and chemical properties., Such as :- (i) All the metals of this group form the strong Alkali , which is mostly found in the earth crust. (ii) All the metals of this group, Reacts with the oxygen in the similar MANNER and form their respective colored oxides. (iii) All the metals have the same valency of two. (iv) All the elements of this group are good reducing agent.. NOTE :- Carbon and Nitrogen are non- metals , They don't resemble magnesium in any manner. Argon is a noble gas which ALSO doesn't resemble with magnesium. Thus the only one who resemble with magnesium is Beryllium (Be), Hence OPTION (b) is correct. Hope it Helps.

Discussion

18.	Give balanced chemical equation for:-Sulphur + Nitric Acid => Sulphuric Acid + Nitrogen dioxide + Water
Answer» Explanation: For the reaction: $\text{Sulfur + <klux>NITRIC</klux> Acid }\rightarrow\text{ <klux>SULFURIC</klux> Acid + <klux>NITROGEN</klux> Dioxide + Water}$ The balanced chemical EQUATION is : $S(s)+6HNO_3(aq.)\rightarrow H_2SO_4(aq.)+6NO_2(g)+2H_2O(l)$ By Stoichiometry, 1 MOLE of elemental Sulfur reacts with nitric acid to produce Sulfuric acid, Nitrogen dioxide gas and water.

18.

Give balanced chemical equation for:-Sulphur + Nitric Acid => Sulphuric Acid + Nitrogen dioxide + Water

Answer»

Explanation: For the reaction:

$\text{Sulfur + <klux>NITRIC</klux> Acid }\rightarrow\text{ <klux>SULFURIC</klux> Acid + <klux>NITROGEN</klux> Dioxide + Water}$

The balanced chemical EQUATION is :

$S(s)+6HNO_3(aq.)\rightarrow H_2SO_4(aq.)+6NO_2(g)+2H_2O(l)$

By Stoichiometry,

1 MOLE of elemental Sulfur reacts with nitric acid to produce Sulfuric acid, Nitrogen dioxide gas and water.

Discussion

19.	Why do we need to classify drugs in different ways?
Answer» Hi dear here is ur answer ✌✌ We need to classify drugs in different ways because different drugs are effective against the particular micro-organism RESPONSIBLE for the disease. Drugs can be classified in the following ways: (i) on the basis of pharmacological effect. (ii) On the basis of action on a particular biochemical process. (iii) On the basis of chemical STRUCTURE. (iv) On the basis of molecular targets. i hope it helps u buddy ✌✌

Discussion

20.	the atomic number of beryllium is 4 while that of oxygen is 8.write down the electronic configuration of the both and deduce their valency from thevsame
Answer» Beryillium ......2,2. and VALENCY +2 Oxygen.......2,6...and valency _2.....

Discussion

21.	Give reasons : (a) white silver chloride turns grey in sunlight. (b) brown coloured copper powder on heating in air turns into black coloured substance.
Answer» Hey!!! (a) White Silver Chloride (AgCl) turns GREY in sunlight because of Photolysis or Photolytic decomposition in the presence of sunlight. => Silver Chloride decomposes to form Silver and Chloride. (B) Brown coloured copper powder on heating in AIR turns into a black substance, this black substance is copper oxide. This is an EXAMPLE of combination reaction. Copper and oxygen react to form a single product called copper oxide. Hope this helps

Discussion

22.	Chemical name of dinitrogen oxide
Answer» LAUGHING GAS............

Discussion

23.	Difference between available chlorine and total chlorine
Answer» Hii DEAR!! here ur amswer!! ______________ ▪we can say that available chlorine is FREE chlorine:- ▪diffrence both chlorine:' ▪▪Free chlorine refers to both hypochlorous acid (HOCl) and the hypochlorite (OCl-) ion or bleach, and is COMMONLY ADDED to water systems for disinfection. >< When ammonia or organic nitrogen is also present, chloramines known as monochloramine, dichloramine, and trichloramine will quickly form. Chloramines are also known as combined chlorine. >< Total chlorine is the SUM of free chlorine and combined chlorine. The level of total chlorine should always be greater than or equal to the level of free chlorine. !+hope help.u plz mark brainlist dear friend!! ______________♡♡♡♡♡♡>♡>♡6♡♡>♡6♡

Discussion

24.	How to find no. of optical isomers in bidentate ligand?
Answer» Hii dear!! here UR answer!! ______________ >>>>>Optical activity refers to whether or not a compound has optical isomers. A coordinate compound that is optically active has optical isomers and a coordinate compound that is not optically active does not have optical isomers. As we will discuss later, optical isomers have the unique property of rotating light. When light is shot through a polarimeter, optical isomers can rotate the light so it comes out in a different direction on the other end. Armed with the knowledge of symmetry and mirror images, optical isomers should not be very difficult. There are two ways optical isomers can be DETERMINED: using mirror images or using planes of symmetry. >>Optical isomers do not EXHIBIT symmetry and do not have identical mirror images. Let's go through a quick review of symmetry and mirror images. A mirror image of an object is that object flipped or the way the object would LOOK in front of a mirror. For example, the mirror image of your left hand would be your right hand. Symmetry on the other hand refers to when an object looks exactly the same when sliced in a certain direction with a plane. For example imagine the shape of a square. No MATTER in what direction it is sliced, the two resulting images will be the same.... !!hope help u plz mark brainlist dear!! _________________^^^^^^^^^^//%%%%%

Discussion

25.	Salt and sugar do not appear to have fixed shape but they are solid give reason chemistry 9 1chapter
Answer» Sold in sugar do not appear to have FIXED because they are very small even the SHAPE of each individual sugar or salt CRYSTAL remain fixed whether we take it and put it on a plate or in a jar yes these are SOLIDS

Discussion

26.	Why a small amount of ethyl alcohol is usually added to chloroform bottles because?
Answer» Chloroform easily gets oxidised to form the POISONOUS GAS PHOSGENE. to prevent its OXIDATION a small amount of ethyl alcohol is added to the bottle containing chloroform.

Discussion

27.	What is dry ice ? how it is prepared.
Answer» Dry ice is a SOLID CARBON dioxide.by APPLYING PRESSURE carbon dioxide is converted into dry ice and releasing pressure it is converted BACK to carbon dioxide. I hope it will help you :)

Discussion

28.	What is the charge of sulfonium ion?-1+1+2-2
Answer» The charge is -2. Sulfur ATOMS have TWO LONE electron PAIRS that do not have pairs with positive particles. hope this HELPS

Discussion

29.	What is chemical formula of marble?
Answer» HEY!!!! CHEMICAL FORMULA of MARBLE is CaCO3 Calcium Carbonate Hope this HELPS you

Discussion

30.	0.004M Na2So4 is isotonic with 0.01M glucose. Degree of dissociation of Na2So4 is
Answer» The REACTION is GIVEN as, i $c_{1}$ RT= $c_{2}$ RT i $c_{1}$ = $c_{2}$ (1+2 $\alpha$ )0.004=0.01 $\alpha$ =0.75 hence DEGREE of DISSOCIATION is 75%

30.

0.004M Na2So4 is isotonic with 0.01M glucose. Degree of dissociation of Na2So4 is

Answer»

The REACTION is GIVEN as,

i $c_{1}$ RT= $c_{2}$ RT

i $c_{1}$ = $c_{2}$

(1+2 $\alpha$ )0.004=0.01

$\alpha$ =0.75

hence DEGREE of DISSOCIATION is 75%

Discussion

31.	Which characteristic property of particles of matter is illustrated by the phenomenon of diffusion?
Answer» (1)matter is made up of TINY particles. (2)particles have inter - PARTICLE space between them. (3)particle of matter is ATTRACT each other

Discussion

32.	It takes time for pieces of shahabad tile to disappear in HCL,but it's powder disappears rapidly
Answer» It happens BCS of the COMPOUND that REACTS with HCL

Discussion

33.	Calculate spin only magnetic moment for mn2+ and ni++
Answer» $Mn^{2+}$ $<klux>NI</klux>^{2+}$ $5.916\text{ BM},2.828\text{ BM}$ Answer : The spin only magnetic moment for and is respectively. Explanation : $Mn^{2+}$ For ION, Atomic number of Mn = 25 Electronic configuration of Mn = $1s^22s^22p^63s^23p^64s^23d^5$ Electronic configuration of $Mn^{2+}$ ion = $1s^22s^22p^63s^23p^63d^5$ The UNPAIRED ELECTRONS in $Mn^{2+}$ ion = 5 $Ni^{2+}$ For ion, Atomic number of Ni = 25 Electronic configuration of Ni = $1s^22s^22p^63s^23p^64s^23d^8$ Electronic configuration of $Ni^{2+}$ ion = $1s^22s^22p^63s^23p^63d^8$ The unpaired electrons in $Ni^{2+}$ ion = 2 Formula used for spin only magnetic moment : $\mu_s=\sqrt{n(n+2)}$ where, $\mu_s$ = spin only magnetic moment n = number of unpaired electrons $Mn^{2+}$ The spin only magnetic moment for is, $\mu_s=\sqrt{5(5+2)}=5.916\text{ BM}$ $Ni^{2+}$ The spin only magnetic moment for is, $\mu_s=\sqrt{2(2+2)}=2.828\text{ BM}$ $Mn^{2+}$ $Ni^{2+}$ $5.916\text{ BM},2.828\text{ BM}$ Therefore, the spin only magnetic moment for and is respectively.

33.

Calculate spin only magnetic moment for mn2+ and ni++

Answer»

$Mn^{2+}$ $<klux>NI</klux>^{2+}$ $5.916\text{ BM},2.828\text{ BM}$ Answer : The spin only magnetic moment for and is respectively.

Explanation :

$Mn^{2+}$ For ION,

Atomic number of Mn = 25

Electronic configuration of Mn = $1s^22s^22p^63s^23p^64s^23d^5$

Electronic configuration of $Mn^{2+}$ ion = $1s^22s^22p^63s^23p^63d^5$

The UNPAIRED ELECTRONS in $Mn^{2+}$ ion = 5

$Ni^{2+}$ For ion,

Atomic number of Ni = 25

Electronic configuration of Ni = $1s^22s^22p^63s^23p^64s^23d^8$

Electronic configuration of $Ni^{2+}$ ion = $1s^22s^22p^63s^23p^63d^8$

The unpaired electrons in $Ni^{2+}$ ion = 2

Formula used for spin only magnetic moment :

$\mu_s=\sqrt{n(n+2)}$

where,

$\mu_s$ = spin only magnetic moment

n = number of unpaired electrons

$Mn^{2+}$ The spin only magnetic moment for is,

$\mu_s=\sqrt{5(5+2)}=5.916\text{ BM}$

$Ni^{2+}$ The spin only magnetic moment for is,

$\mu_s=\sqrt{2(2+2)}=2.828\text{ BM}$

$Mn^{2+}$ $Ni^{2+}$ $5.916\text{ BM},2.828\text{ BM}$ Therefore, the spin only magnetic moment for and is respectively.

Discussion

34.	Calculate the charge on fe(z=26anda=56) nucleus given charge on a proton 1.6*10^-19
Answer» Thanks for asking the QUESTION! ANSWER:: ₂₆Fe⁵⁶ Atomic number of Fe = 26 Atomic mass of Fe = 56 We know, Atomic number is equal to number of protons which is 26 for Iron (Fe). *Charge on nucleus is given by (q) = Ze* where , e = charge on electron ; Z = Atomic number q = Ze q = 26 X 1.6 x 10⁻¹⁹ *q = 4.16 x 10⁻¹⁸ COULOMB (C)* Hope it HELPS!

Discussion

35.	A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. This is the equation for the reaction: Na2CO3 + ZnI2 → 2NaI + ZnCO3. What is the percent yield of zinc carbonate?
Answer» A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. The EQUATION for the reaction is given as FOLLOWS: Na₂CO₃ + ZnI₂ → 2NaI + ZnCO₃. Then the percent yield of zinc carbonate can be calculated as follows; First the mole ratio of zinc iodide to zinc carbonate is 1:1 therefore 1.7 moles of zinc carbonate is theoretically produced. So theoretical yield of zinc carbonate is= Moles x relative formula MASS of zinc carbonate 1.7 x 124= 210.8 grams Hence PERCENTAGE yield= ACTUAL yield/theoretical yield x 100 = 12.6/210.8 x 100 = 6%.

35.

A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. This is the equation for the reaction: Na2CO3 + ZnI2 → 2NaI + ZnCO3. What is the percent yield of zinc carbonate?

Answer»

A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. The EQUATION for the reaction is given as FOLLOWS: Na₂CO₃ + ZnI₂ → 2NaI + ZnCO₃. Then the percent yield of zinc carbonate can be calculated as follows;

First the mole ratio of zinc iodide to zinc carbonate is 1:1 therefore 1.7 moles of zinc carbonate is theoretically produced.

So theoretical yield of zinc carbonate is= Moles x relative formula MASS of zinc carbonate

1.7 x 124= 210.8 grams

Hence PERCENTAGE yield= ACTUAL yield/theoretical yield x 100

= 12.6/210.8 x 100

= 6%.

Discussion

36.	Which is the suitable solvent for dissolving solid ionic liquid
Answer» Polar SOLVENTS are suitable for dissolving IONIC SOLID for e.g. WATER,CHCL3

Discussion

37.	What do you mean by electrode
Answer» An ELECTRODE is an electrical conductor USED to MAKE contact with a nonmetallic PART of a circuit (e.g. a semiconductor, an electrolyte, a VACUUM or air).

Discussion

38.	Boyle’s temperature Tb is equal to
Answer» BOYLE's TEMPERATURE, TB is EQUAL to Tb=a/bR

Discussion

39.	gold foil was discovered by whom and name the charged spices present in it and example how he had represent it
Answer» I GUESS I was DISCOVERED during CATHODE RAY EXPERIMENT

Discussion

40.	Word equation of Na+O2=Na2O
Answer» SODIUM + OXYGEN = sodium OXIDE

Discussion

41.	When a burning splinter introduced into a jar of hydrogen the splinter gets extinguished. why?
Answer» When a BURNING SPLINTER is brought near the HYDROGEN GAS we get a pop up sound it does not extinguish But if we bought splinter near cardon dioxide gas then it will get extinguish

41.

When a burning splinter introduced into a jar of hydrogen the splinter gets extinguished. why?

Answer»

When a BURNING SPLINTER is brought near the HYDROGEN GAS we get a pop up sound it does not extinguish

But if we bought splinter near cardon dioxide gas then it will get extinguish

Discussion

42.	Kp is how many times equal to kc for the given reaction n2+3h2
Answer» HOPE it HELPS you ! BEST of LUCK for AHEAD !

Discussion

43.	What is the name of a chemical substance which constitutes the genes
Answer» ARISTOTLE is the CHEMICAL SUBSTANCE

Discussion

44.	4. Which compound is responsible for strong characteristic odor of fish?
Answer» WELL normally freshly caught fish don't have any pungent smelling odor but the fish that are store-brought and STORED for a longer PERIOD of time give out a pungent smelling odor this is due to a compound called as trimethylamine ''TMA''

Discussion

45.	Whether Valency of electons decrease or increases while going from left to right?
Answer» VALENCY of ELECTRONS INCREASES from LEFT to RIGHT

Discussion

46.	Word equation of CA + O2 =CaO
Answer» Calcium+oxygen=calcium OXIDE

Discussion

47.	What is a thermite reaction? 3-marks
Answer» The thermite PROCESS is a chemical reaction in which a metal OXIDE (preferrably MOLTEN) are displaced by another molten metal which is more reactive than the metal in the metal oxide, releasing a lot of HEA

Discussion

48.	Write five examples of chemical change related to day to day life and write proper explanation
Answer» Rusting of iron. combustion (burning) of wood. metabolism of FOOD in the body mixing an acid and a base, such as hydrochloric acid (HCL) and sodium hydroxide (NaOH)COOKING an egg. digesting SUGAR with the amylase in saliva.

Discussion

49.	Fromula of vinegar please
Answer» _______✨ HEY MATE ✨_______ ➡️CH3COOH is the FORMULA of VINEGAR. $✌️I THINK IT HELPED YOU ✌️$

Discussion

50.	If h+. + oh- = h2o +13.7 kcal then heat of complete neutralisation of one gram mole of h2so4 with strong base will be
Answer» When strong acid and strong BASE REACT with each other then complete neutralisation OCCURS so heat produced =13.7kcal as GIVEN......

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

From 200 mg of CO2 , 10^21 molecules are removed . How many mole of CO2 are left?

Which species has 16 protons 16 neutrons and 18 electrons?

What is the mass of 0.5 mole of ozone molecule

Explain the role of significant figuretry to explain in your own words !! ( 11th chemistry ) avoid spam ❎❎❎

given that in the hydrogen atom the transition energy for n= 1 and n =2 rydberg states is 10.2 electron volt.the energy for the same transition in be3+ is

A decinormal solution of nacl develops the osmotic pressure of 4.6atm at 300k calculate degree of disassociation qeustion no.

Name the product obtained on cathode during electrolysis of water

Hey guys....Need A Logical Answer of my question...My Question is -:WHEN WE CUT ONIONS. WHY OUR EYES GET IRRITATION..REQUIRED BEST ANSWER__________

State the effect of temperature on diffusion

An aquaus solution has molality 11.11 hence , mole fraction of solute in the solution is

Chlorine gas +sodium metal-sodium chloride

Why do uncharged atom never crystallise in simple cubic

Which of the following compound does not exist? A. Cul2 B. Cu2I2 C. Cucl2 D. CuCl

How does water kept cool in an earthen pot become cool during summers

If l=1 for an atom then the number of orbitals in its sub-shell is:

Terylene is a popular form of

With which element does the element magnesium resemblea. N b. Bec. Ard. Cl

Give balanced chemical equation for:-Sulphur + Nitric Acid => Sulphuric Acid + Nitrogen dioxide + Water

Why do we need to classify drugs in different ways?

the atomic number of beryllium is 4 while that of oxygen is 8.write down the electronic configuration of the both and deduce their valency from thevsame

Give reasons : (a) white silver chloride turns grey in sunlight. (b) brown coloured copper powder on heating in air turns into black coloured substance.

Chemical name of dinitrogen oxide

Difference between available chlorine and total chlorine

How to find no. of optical isomers in bidentate ligand?

Salt and sugar do not appear to have fixed shape but they are solid give reason chemistry 9 1chapter

Why a small amount of ethyl alcohol is usually added to chloroform bottles because?

What is dry ice ? how it is prepared.

What is the charge of sulfonium ion?-1+1+2-2

What is chemical formula of marble?

0.004M Na2So4 is isotonic with 0.01M glucose. Degree of dissociation of Na2So4 is

Which characteristic property of particles of matter is illustrated by the phenomenon of diffusion?

It takes time for pieces of shahabad tile to disappear in HCL,but it's powder disappears rapidly

Calculate spin only magnetic moment for mn2+ and ni++

Calculate the charge on fe(z=26anda=56) nucleus given charge on a proton 1.6*10^-19

A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. This is the equation for the reaction: Na2CO3 + ZnI2 → 2NaI + ZnCO3. What is the percent yield of zinc carbonate?

Which is the suitable solvent for dissolving solid ionic liquid

What do you mean by electrode

Boyle’s temperature Tb is equal to

gold foil was discovered by whom and name the charged spices present in it and example how he had represent it

Word equation of Na+O2=Na2O

When a burning splinter introduced into a jar of hydrogen the splinter gets extinguished. why?

Kp is how many times equal to kc for the given reaction n2+3h2

What is the name of a chemical substance which constitutes the genes

4. Which compound is responsible for strong characteristic odor of fish?

Whether Valency of electons decrease or increases while going from left to right?

Word equation of CA + O2 =CaO

What is a thermite reaction? 3-marks

Write five examples of chemical change related to day to day life and write proper explanation

Fromula of vinegar please

If h+. + oh- = h2o +13.7 kcal then heat of complete neutralisation of one gram mole of h2so4 with strong base will be