52639 + Interview Questions in Secondary School in Chemistry

1.	Give mi this practical calculations answer
Answer» EXPLANATION: SORRY I didn't KNOW about these QUESTION OK

1.

Give mi this practical calculations answer

Answer»

EXPLANATION:

SORRY I didn't KNOW about these QUESTION OK

Discussion

2.	12. The mass of CO, that will be obtainedby heating 10 kg of 80% pure limestone (CaCO) is :-a) 4.4 kg b) 6.6 kgc) 3.52 kg d) 8.8 kg
Answer» the above ANSWER is 3.52

2.

12. The mass of CO, that will be obtainedby heating 10 kg of 80% pure limestone (CaCO) is :-a) 4.4 kg b) 6.6 kgc) 3.52 kg d) 8.8 kg

Answer»

the above ANSWER is 3.52

Discussion

3.	Please please,I will give 40 points for this Question
Answer» Answer: a) the information given by the chemical EQUATION are the type of acid [ diluted or concentrated ] the physical state of one of the products [ CO2 ] B) the information not provided are the physical STATES of all products and reactants the precipitate in the REACTION HOPE it helped and please mark as brainliest:)

3.

Please please,I will give 40 points for this Question

Answer»

Answer:

a) the information given by the chemical EQUATION are

the type of acid [ diluted or concentrated ]
the physical state of one of the products [ CO2 ]

B) the information not provided are

the physical STATES of all products and reactants
the precipitate in the REACTION

HOPE it helped and please mark as brainliest:)

Discussion

4.	What is an activity series s metalsthe metals en Mo, Al Cu & Fedecreasing order of reactivity.in
Answer» ANSWER: reactivity order Al FE CU Mo

4.

What is an activity series s metalsthe metals en Mo, Al Cu & Fedecreasing order of reactivity.in

Answer»

ANSWER:

reactivity order Al FE CU Mo

Discussion

5.	Essay of spring season in hindi
Answer» ANSWER: EXPLANATION: वसंत ऋतु पर निबंध 6 (600 शब्द) प्रस्तावना वसंत ऋतु तीन महीने की होती है हालांकि, इसकी चारों ओर की सुन्दरता के कारण ऐसा लगता है कि, यह बहुत थोड़े समय के लिए ही रहती है। पक्षी वंसत ऋतु के स्वागत में मीठी आवाज में गाना गाना शुरु कर देते हैं। तापमान सामान्य रहता है, इस मौसम में न तो बहुत अधिक सर्दी होती है और न ही बहुत अधिक गर्मी। चारों ओर की हरियाली के कारण यह हमें ऐसा महसूस कराता है कि, पूरी प्रकृति ने स्वंय को हरी चादर से ढक लिया है। सभी पेड़ और पौधे नया जीवन और नया रुप प्राप्त करते हैं, क्योंकि उनकी शाखाओं पर नई पत्तियाँ और फूल विकसित होते हैं। फसलें खेतों में पूरी तरह से पक जाती है और सभी तरफ वास्तविक सोने की तरह दिखती है। बसंत ऋतु का स्वागत पेड़-पौधों की शाखाओं पर नई और हल्की हरी पत्तियाँ आना शुरु होती है। सर्दियों की लम्बी खामोशी के बाद, पक्षी हमारे चारों ओर घर के पास और आसमान में चहचहाना शुरु कर देते हैं। वसंत ऋतु के आगमन पर, वे स्वयं को तरोताजा महसूस करते हैं और अपनी खामोशी को मीठी आवाज के द्वारा तोड़ते हैं। उनकी गतिविधियाँ हमें यह महसूस कराती है कि, वे बहुत खुशी महसूस कर रहे हैं और भगवान को इस अच्छे मौसम को देने के लिए धन्यवाद कह रहे हैं। ये ऋतुएँ एक-एक करके आती हैं और भारत माता का श्रृंगार करती हैं और चली जाती है। सभी ऋतुओं की अपनी-अपनी शोभा होती है। ऋतुओं का राजा बसंत ऋतु की शोभा सबसे निराली होती है। बसंत ऋतु का ऋतुओं में सर्वश्रेष्ठ स्थान होता है इसी वजह से यह ऋतुओं की राजा मानी जाती है। भारत की प्रसिद्धि का कारण उसकी प्राकृतिक शोभा होती है। लोग अपने आप को धन्य मानते हैं जो इस पृथ्वी पर रहते हैं। इस मौसम की शुरूआत में, तापमान सामान्य हो जाता है, जो लोगों को राहत महसूस कराता है, क्योंकि वे शरीर पर बिना गरम कपड़ों को पहने बाहर जा सकते हैं। अभिभावक सप्ताह के अन्त के दौरान बच्चों के साथ मस्ती करने के लिए पिकनिक का आयोजन करते हैं। फूलों की कलियाँ अपने पूरे शबाव में खिलती है और प्रकृति का स्वागत अच्छी मुस्कान के साथ करती है। फूलों का खिलना चारों ओर खुशबू को फैलाकर बहुत सुन्दर दृश्य और रोमांचित भावनाओं का निर्माण करता है। मनुष्य और पशु-पक्षी स्वस्थ, सुखी और सक्रिय महसूस करते हैं। लोग सर्दियों के मौसम में बहुत कम तापमान के कारण अपने रुके हुए कार्य और योजनाओं को इस मौसम में करना शुरु करते हैं। वसंत का बहुत ठंडा वातावरण और बहुत सामान्य तापमान लोगों को बिना थके बहुत अधिक कार्य करने के लिए तैयार करता है। सभी सुबह से शाम तक बहुत अच्छे से दिन की शुरुआत करते हैं, यहाँ तक कि, बहुत अधिक भीड़ होने के बाद भी तरोताजा और राहत महसूस करते हैं। निष्कर्ष किसान बहुत अधिक खुश और राहत महसूस करते हैं, क्योंकि वे नई फसल को बहुत महीनों की कठिन मेहनत के बाद अपने घर पुरस्कार के रुप में सफलता पूर्वक लाते हैं। हम होली, हनुमान जयंती, नवरात्री और अन्य त्योहार अपने मित्रों, परिवार के सदस्यों, पड़ौसियों और रिश्तेदारों के साथ मिलकर मनाते हैं। वसंत ऋतु, हमारे और पूरे वातावरण को प्रकृति की ओर से बहुत अच्छा तौहफा है और हमें बहुत अच्छा संदेश देती है कि, सुख और दुख एक के बाद एक आते जाते रहते हैं। इसलिए कभी भी बुरा महसूस नहीं करना चाहिए और धैर्य रखना चाहिए, क्योंकि हमेशा काली घनी रात के बाद सुबह अवश्य होती है। here is your ESSAY

5.

Essay of spring season in hindi

Answer»

ANSWER:

EXPLANATION:

वसंत ऋतु पर निबंध 6 (600 शब्द)

प्रस्तावना

वसंत ऋतु तीन महीने की होती है हालांकि, इसकी चारों ओर की सुन्दरता के कारण ऐसा लगता है कि, यह बहुत थोड़े समय के लिए ही रहती है। पक्षी वंसत ऋतु के स्वागत में मीठी आवाज में गाना गाना शुरु कर देते हैं। तापमान सामान्य रहता है, इस मौसम में न तो बहुत अधिक सर्दी होती है और न ही बहुत अधिक गर्मी। चारों ओर की हरियाली के कारण यह हमें ऐसा महसूस कराता है कि, पूरी प्रकृति ने स्वंय को हरी चादर से ढक लिया है। सभी पेड़ और पौधे नया जीवन और नया रुप प्राप्त करते हैं, क्योंकि उनकी शाखाओं पर नई पत्तियाँ और फूल विकसित होते हैं। फसलें खेतों में पूरी तरह से पक जाती है और सभी तरफ वास्तविक सोने की तरह दिखती है।

बसंत ऋतु का स्वागत

पेड़-पौधों की शाखाओं पर नई और हल्की हरी पत्तियाँ आना शुरु होती है। सर्दियों की लम्बी खामोशी के बाद, पक्षी हमारे चारों ओर घर के पास और आसमान में चहचहाना शुरु कर देते हैं। वसंत ऋतु के आगमन पर, वे स्वयं को तरोताजा महसूस करते हैं और अपनी खामोशी को मीठी आवाज के द्वारा तोड़ते हैं। उनकी गतिविधियाँ हमें यह महसूस कराती है कि, वे बहुत खुशी महसूस कर रहे हैं और भगवान को इस अच्छे मौसम को देने के लिए धन्यवाद कह रहे हैं। ये ऋतुएँ एक-एक करके आती हैं और भारत माता का श्रृंगार करती हैं और चली जाती है। सभी ऋतुओं की अपनी-अपनी शोभा होती है।

ऋतुओं का राजा

बसंत ऋतु की शोभा सबसे निराली होती है। बसंत ऋतु का ऋतुओं में सर्वश्रेष्ठ स्थान होता है इसी वजह से यह ऋतुओं की राजा मानी जाती है। भारत की प्रसिद्धि का कारण उसकी प्राकृतिक शोभा होती है। लोग अपने आप को धन्य मानते हैं जो इस पृथ्वी पर रहते हैं। इस मौसम की शुरूआत में, तापमान सामान्य हो जाता है, जो लोगों को राहत महसूस कराता है, क्योंकि वे शरीर पर बिना गरम कपड़ों को पहने बाहर जा सकते हैं। अभिभावक सप्ताह के अन्त के दौरान बच्चों के साथ मस्ती करने के लिए पिकनिक का आयोजन करते हैं। फूलों की कलियाँ अपने पूरे शबाव में खिलती है और प्रकृति का स्वागत अच्छी मुस्कान के साथ करती है। फूलों का खिलना चारों ओर खुशबू को फैलाकर बहुत सुन्दर दृश्य और रोमांचित भावनाओं का निर्माण करता है।

मनुष्य और पशु-पक्षी स्वस्थ, सुखी और सक्रिय महसूस करते हैं। लोग सर्दियों के मौसम में बहुत कम तापमान के कारण अपने रुके हुए कार्य और योजनाओं को इस मौसम में करना शुरु करते हैं। वसंत का बहुत ठंडा वातावरण और बहुत सामान्य तापमान लोगों को बिना थके बहुत अधिक कार्य करने के लिए तैयार करता है। सभी सुबह से शाम तक बहुत अच्छे से दिन की शुरुआत करते हैं, यहाँ तक कि, बहुत अधिक भीड़ होने के बाद भी तरोताजा और राहत महसूस करते हैं।

निष्कर्ष

किसान बहुत अधिक खुश और राहत महसूस करते हैं, क्योंकि वे नई फसल को बहुत महीनों की कठिन मेहनत के बाद अपने घर पुरस्कार के रुप में सफलता पूर्वक लाते हैं। हम होली, हनुमान जयंती, नवरात्री और अन्य त्योहार अपने मित्रों, परिवार के सदस्यों, पड़ौसियों और रिश्तेदारों के साथ मिलकर मनाते हैं। वसंत ऋतु, हमारे और पूरे वातावरण को प्रकृति की ओर से बहुत अच्छा तौहफा है और हमें बहुत अच्छा संदेश देती है कि, सुख और दुख एक के बाद एक आते जाते रहते हैं। इसलिए कभी भी बुरा महसूस नहीं करना चाहिए और धैर्य रखना चाहिए, क्योंकि हमेशा काली घनी रात के बाद सुबह अवश्य होती है।

here is your ESSAY

Discussion

6.	a solution is prepared by dissolving 20 grams of sodium chloride in 250 grams of water . calculate the mass by mass percentage of the sodium chloride in the solution
Answer» EXPLANATION: solute=20grams solvent=250grams SOLUTION=250+20=270 MASS by mass PERCENTAGE of the solution= mass of solute/mass of solution =20/250 =0.08per CENT.

6.

a solution is prepared by dissolving 20 grams of sodium chloride in 250 grams of water . calculate the mass by mass percentage of the sodium chloride in the solution

Answer»

EXPLANATION:

solute=20grams

solvent=250grams

SOLUTION=250+20=270

MASS by mass PERCENTAGE of the solution= mass of solute/mass of solution

=20/250

=0.08per CENT.

Discussion

7.	Is there any other liquid metal rather than mercury ?
Answer» YES, GALLIUM is LIQUID at ROOM TEMPERATURE

Discussion

8.	What is common name of this
Answer» ANSWER: HEXAGONAL uekelndjdid

8.

What is common name of this

Answer»

ANSWER:

HEXAGONAL uekelndjdid

Discussion

9.	What are polyatomic ions give examples
Answer» Answer: POLYATOMIC IONS are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are USUALLY covalently bonded to one ANOTHER, and THEREFORE stay together as a single, charged unit. mark as brainliest!

9.

What are polyatomic ions give examples

Answer»

Answer:

POLYATOMIC IONS are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are USUALLY covalently bonded to one ANOTHER, and THEREFORE stay together as a single, charged unit.

mark as brainliest!

Discussion

10.	one of the gases organic compounds on analysing give 10% hydrogen by when it has no heteroatoms the organic compound is an unsaturated hydrocarbon if find the empirical formula of the compound a)C2H3 b)CH2 c)C4H5 d)C3H4
Answer» ANSWER: The EMPIRICAL FORMULA of the COMPOUND will be C4H5

10.

one of the gases organic compounds on analysing give 10% hydrogen by when it has no heteroatoms the organic compound is an unsaturated hydrocarbon if find the empirical formula of the compound a)C2H3 b)CH2 c)C4H5 d)C3H4

Answer»

ANSWER:

The EMPIRICAL FORMULA of the COMPOUND will be C4H5

Discussion

11.	What is amphoteric nature?
Answer» Answer: An amphoteric nature has acidic and basic properties. When we REFER to the acidic property of an amphoteric SUBSTANCE, we mean that it is capable of donating a proton in the form of a hydrogen ion or accepting electrons (like from hydroxide IONS) when it reacts with a basic substance Explanation: In chemistry, an amphoteric compound is a molecule or ion that can REACT both as an acid and as a base. Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. Al2O3 is an example of an amphoteric oxide.

11.

What is amphoteric nature?

Answer»

Answer:

An amphoteric nature has acidic and basic properties. When we REFER to the acidic property of an amphoteric SUBSTANCE, we mean that it is capable of donating a proton in the form of a hydrogen ion or accepting electrons (like from hydroxide IONS) when it reacts with a basic substance

Explanation:

In chemistry, an amphoteric compound is a molecule or ion that can REACT both as an acid and as a base. Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. Al2O3 is an example of an amphoteric oxide.

Discussion

12.	Maintenance of such sewage
Answer» EXPLANATION: is to CLEAN our SURRONDINGS and our ENVIRONMENT

12.

Maintenance of such sewage

Answer»

EXPLANATION:

is to CLEAN our SURRONDINGS and our ENVIRONMENT

Discussion

13.	Is chlorine exist commonly inGaseous state.
Answer» Answer: yes but EVEN in LIQUID and SOLID forms U can find it PLEASE mark me as the brainlyest

13.

Is chlorine exist commonly inGaseous state.

Answer»

Answer:

yes but EVEN in LIQUID and SOLID forms U can find it

PLEASE mark me as the brainlyest

Discussion

14.	calculate number of atoms is each of the following (average atomic mass :n=14u, s=32)a)0.4 mole of nitrogen
Answer» Answer: first calculate the GIVEN weight, from n=given WT./molecular wt. Explanation: given wt. = mol. wt.× no. of MOLES(n) = 14× 0.4 =5.6 now, no. of atoms = 0.4× 6.023×10^23

14.

calculate number of atoms is each of the following (average atomic mass :n=14u, s=32)a)0.4 mole of nitrogen

Answer»

Answer:

first calculate the GIVEN weight, from

n=given WT./molecular wt.

Explanation:

given wt. = mol. wt.× no. of MOLES(n)

= 14× 0.4

=5.6

now, no. of atoms = 0.4× 6.023×10^23

Discussion

15.	Why the soil in marshy area is found to be water logged, after heavy rains?
Answer» WATERLOGGING occurs whenever the soil is so wet that there is insufficient OXYGEN in the pore space for plant roots to be able to adequately respire. Other gases DETRIMENTAL to root growth, such as carbon dioxide and ethylene, also ACCUMULATE in the root zone and affect the plants.

15.

Why the soil in marshy area is found to be water logged, after heavy rains?

Answer»

WATERLOGGING occurs whenever the soil is so wet that there is insufficient OXYGEN in the pore space for plant roots to be able to adequately respire. Other gases DETRIMENTAL to root growth, such as carbon dioxide and ethylene, also ACCUMULATE in the root zone and affect the plants.

Discussion

16.	What are these called
Answer» ANSWER: Explanation: SECOND FIGURE is ALSO called as inorganic benzene.

16.

What are these called

Answer»

ANSWER:

Explanation:

SECOND FIGURE is ALSO called as inorganic benzene.

Discussion

17.	Difference between sisa and kanch
Answer» Answer: your answer Explanation: SHISHA MEANS mirror Kanch means glass Shisha can be USED for glass and mirror both But kanch specifically glass

17.

Difference between sisa and kanch

Answer»

Answer:

your answer

Explanation:

SHISHA MEANS mirror Kanch means glass Shisha can be USED for glass and mirror both But kanch specifically glass

Discussion

18.	Why we converted ores into oxides give reason why cannot be separate directly?
Answer» because we can EASILY SEPARATED out METRE from OXIDE ORE ...

Discussion

19.	Write the names of the given element 1) quick lime 2) baking powder
Answer» 1) Quick lime is CaO. ELEMENTS PRESENT are calcium and oxygen. 2) Baking POWDER is NaHCO3. Elements present are sodium, hydrogen, carbon and oxygen. Hope it helps you ...

19.

Write the names of the given element 1) quick lime 2) baking powder

Answer»

1) Quick lime is CaO. ELEMENTS PRESENT are calcium and oxygen.

2) Baking POWDER is NaHCO3. Elements present are sodium, hydrogen, carbon and oxygen.

Hope it helps you ...

Discussion

20.	DIFFERENCE BETWEEN STRONG ELECTROLYTE AND WEAK ELECTROLYTE
Answer» ANSWER: HOPE IT HELPS (•‿•)........

20.

DIFFERENCE BETWEEN STRONG ELECTROLYTE AND WEAK ELECTROLYTE

Answer»

ANSWER:

HOPE IT HELPS (•‿•)........

Discussion

21.	Neoprene is suitable for use in (a) bearings of bridges (b) hard duty rubber coatings of floors (c) joinery works (d) floors of dance halls
Answer» the ANSWER is OPTION (B)

21.

Neoprene is suitable for use in (a) bearings of bridges (b) hard duty rubber coatings of floors (c) joinery works (d) floors of dance halls

Answer»

the ANSWER is OPTION (B)

Discussion

22.	Halogens order of +R effect
Answer» Bigger HALOGEN will have more R effect I>BR>Cl>F

22.

Halogens order of +R effect

Answer»

Bigger HALOGEN will have more R effect

I>BR>Cl>F

Discussion

23.	How to find which has more lattice energy
Answer» Answer: This model EMPHASIZES two MAIN factors that contribute to the lattice energy of an ionic solid: the charge on the ions, and the RADIUS, or SIZE, of the ions. The effect of those factors is: as the charge of the ions increases, the lattice energy increases. as the size of the ions increases, the lattice energy decreases.

23.

How to find which has more lattice energy

Answer»

Answer:

This model EMPHASIZES two MAIN factors that contribute to the lattice energy of an ionic solid: the charge on the ions, and the RADIUS, or SIZE, of the ions. The effect of those factors is: as the charge of the ions increases, the lattice energy increases. as the size of the ions increases, the lattice energy decreases.

Discussion

24.	State and explain the function of tataric acid in baking powder
Answer» Explanation: Baking powder is USED to make FOOD items fluffy and SOFT .... Function of the Tartaric ACID -- When the baking powder comes in contact with water the tartaric acid gets active and reacts with the Sodium Bicarbonate and CO2 gas is EVOLVED in this reaction, which make s the item to puff.....

24.

State and explain the function of tataric acid in baking powder

Answer»

Explanation:

Baking powder is USED to make FOOD items fluffy and SOFT .... Function of the Tartaric ACID -- When the baking powder comes in contact with water the tartaric acid gets active and reacts with the Sodium Bicarbonate and CO2 gas is EVOLVED in this reaction, which make s the item to puff.....

Discussion

25.	What is the atomic no. of potassium
Answer» ANSWER: the ATOMIC NUMBER of POTASSIUM is 19.

25.

What is the atomic no. of potassium

Answer»

ANSWER:

the ATOMIC NUMBER of POTASSIUM is 19.

Discussion

26.	(d) counteraction of gravitational pullof the Sun to that of Moon92. Which one of the following energy isstored in the links between the atoms?(a) Nuclear energy(b) Chemical energy©Potential energy(d) Thermal energy
Answer» Answer: OPTION C EXPLANATION: POTENTIAL ENERGY

26.

(d) counteraction of gravitational pullof the Sun to that of Moon92. Which one of the following energy isstored in the links between the atoms?(a) Nuclear energy(b) Chemical energy©Potential energy(d) Thermal energy

Answer»

Answer:

OPTION C

EXPLANATION:

POTENTIAL ENERGY

Discussion

27.	if each orbital can take maximum of 3 electrons, the number of elements in the third period of the periodic table will be
Answer» Answer: YOUR ANSWER: If each orbital can HOLD a maximum of 3-electrons. the no. of elements in the 4TH PERIOD of the periodic table is------- 48. 57.

27.

if each orbital can take maximum of 3 electrons, the number of elements in the third period of the periodic table will be

Answer»

Answer:

YOUR ANSWER:

If each orbital can HOLD a maximum of 3-electrons. the no. of elements in the 4TH PERIOD of the periodic table is------- 48. 57.

Discussion

28.	What is zigzag motion of the particles predict its nature ans in very short
Answer» It's brownian MOTION which happens in COLLOIDAL SOLUTIONS

28.

What is zigzag motion of the particles predict its nature ans in very short

Answer»

It's brownian MOTION which happens in COLLOIDAL SOLUTIONS

Discussion

29.	How to find oxidation no forIII B, IV B, VB ,VI B , VII B ,VIII B ?
Answer» Answer: 8- GROUP NUMBER will be the OXIDATION number

29.

How to find oxidation no forIII B, IV B, VB ,VI B , VII B ,VIII B ?

Answer»

Answer:

8- GROUP NUMBER will be the OXIDATION number

Discussion

30.	EXPLAIN GAY LUSSAC'S LAW.NEED A GOOD ANSWER
Answer» Gay-Lussac's Law. ... The French CHEMIST Joseph Gay-Lussac (1778 - 1850) discovered the relationship between the pressure of a gas and its ABSOLUTE temperature. Gay-Lussac's Law states that the pressure of a given mass of gas varies DIRECTLY with the absolute temperature of the gas, when the volume is kept constant.

Discussion

31.	Percent conposition
Answer» ANSWER: PLEASE WRITE FULL QUESTION

31.

Percent conposition

Answer»

ANSWER:

PLEASE WRITE FULL QUESTION

Discussion

32.	How to balance this equation Mg + Hclo3 ➡Mg (Clo3)2 + H20 + hcl with sum
Answer» Answer: 2Mg + 4HclO³=2Mg(ClO³)2+ H²O + 2HCL

32.

How to balance this equation Mg + Hclo3 ➡Mg (Clo3)2 + H20 + hcl with sum

Answer»

Answer:

2Mg + 4HclO³=2Mg(ClO³)2+ H²O + 2HCL

Discussion

33.	Second ionization energy of zinc is lower than the other transition metal of the same series
Answer» in ZINC when then second ELECTRON from 4S is REMOVED will have completely filled 3d subshell which is highly stable than zinc with a half filled 4s

33.

Second ionization energy of zinc is lower than the other transition metal of the same series

Answer»

in ZINC when then second ELECTRON from 4S is REMOVED will have completely filled 3d subshell

which is highly stable than zinc with a half filled 4s

Discussion

34.	What are the problems in the storage of petroleum products due to its volatility
Answer» ANSWER: EXPLANATION:we cannot STORE it in AREAS prone to fire and smoke We can only store it in certain areas where SMOKING is probihited

34.

What are the problems in the storage of petroleum products due to its volatility

Answer»

ANSWER:

EXPLANATION:we cannot STORE it in AREAS prone to fire and smoke

We can only store it in certain areas where SMOKING is probihited

Discussion

35.	How to divide 2.0/3.2
Answer» ANSWER: 1.6 this is answer your QUESTION

35.

How to divide 2.0/3.2

Answer»

ANSWER:

1.6 this is answer your QUESTION

Discussion

36.	an example of suspended particles in a mixture is : (a) soap in water (b) milk in water (c) alcohol in water (d) saw dust in water
Answer» ANSWER: D) sawdust in WATER Explanation: Other optionside DISSOLVE in water, only saw DUST don't

36.

an example of suspended particles in a mixture is : (a) soap in water (b) milk in water (c) alcohol in water (d) saw dust in water

Answer»

ANSWER:

D) sawdust in WATER

Explanation:

Other optionside DISSOLVE in water, only saw DUST don't

Discussion

37.	C. The mass of an atom of hydrogen is1,008 u. What is the mass of 18 atomsof hydrogen. (18.144 u)
Answer» Answer: 18.144 U Explanation: 18 TIMES 1,008 u = 18.144 u

37.

C. The mass of an atom of hydrogen is1,008 u. What is the mass of 18 atomsof hydrogen. (18.144 u)

Answer»

Answer:

18.144 U

Explanation:

18 TIMES 1,008 u = 18.144 u

Discussion

38.	Which will form large vapour NH3 or H2O . Explain.
Answer» The extent of hydrogen bonding DEPENDS upon electronegativity and the number of hydrogen atoms available for bonding. Among nitrogen, fluorine, and oxygen, the increasing order of their electronegativities are N H2O > NH3.But, the actual order is H2O > HF > NH3.Although fluorine is more ELECTRONEGATIVE than oxygen, the extent of hydrogen bonding is higher in water. There is a shortage of hydrogens in HF, whereas there are exactly the right numbers of hydrogens in water. As a result, only straight CHAIN bonding takes place. On the other hand, oxygen FORMS a huge ring-like structure through its high ability of hydrogen bonding

Discussion

39.	Ram want to find the accurate boiling point of water,he should use1- tap water2-distilled water3-salt water4-sugar solution
Answer» ANSWER: i THINK he should USE a distlled WATER

39.

Ram want to find the accurate boiling point of water,he should use1- tap water2-distilled water3-salt water4-sugar solution

Answer»

ANSWER:

i THINK he should USE a distlled WATER

Discussion

40.	Why is formula equations is more informative than a word equation
Answer» EXPLANATION: because we can UNDERSTAND BETTER

40.

Why is formula equations is more informative than a word equation

Answer»

EXPLANATION:

because we can UNDERSTAND BETTER

Discussion

41.	What subshell immediately follows the 3d subshell according to aufbau principle
Answer» Answer: 4s Please MARK me the BRAINLIEST....

41.

What subshell immediately follows the 3d subshell according to aufbau principle

Answer»

Answer:

4s

Please MARK me the BRAINLIEST....

Discussion

42.	Use of saponification value
Answer» Explanation: It is important to the industrial user to know the AMOUNT of free fatty acid present, since this determines in large MEASURE the REFINING loss. ... The SAPONIFICATION NUMBER is the number of milligrams of potassium hydroxide required to neutralize the fatty acids resulting from the complete hydrolysis of 1g of fat .

42.

Use of saponification value

Answer»

Explanation:

It is important to the industrial user to know the AMOUNT of free fatty acid present, since this determines in large MEASURE the REFINING loss. ... The SAPONIFICATION NUMBER is the number of milligrams of potassium hydroxide required to neutralize the fatty acids resulting from the complete hydrolysis of 1g of fat .

Discussion

43.	Balance the equation Pb³O⁴
Answer» ANSWER: where is the EQUATION.... complete the QUESTION PLZ..

43.

Balance the equation Pb³O⁴

Answer»

ANSWER:

where is the EQUATION....

complete the QUESTION PLZ..

Discussion

44.	What will be the nature of aqueous solution of NH4Cl
Answer» ANSWER: the NATURE of aqeous SOLUTION of NH4CL MAY be acidic

44.

What will be the nature of aqueous solution of NH4Cl

Answer»

ANSWER:

the NATURE of aqeous SOLUTION of NH4CL MAY be acidic

Discussion

45.	the unit cell cube length for LiCl is 5.14angstroms assuming anion anion contract the radius of cl is
Answer» ANSWER: The UNIT CELL cube length for LiCl is 5.14angstroms assuming anion anion contract the RADIUS of cl

45.

the unit cell cube length for LiCl is 5.14angstroms assuming anion anion contract the radius of cl is

Answer»

ANSWER:

The UNIT CELL cube length for LiCl is 5.14angstroms assuming anion anion contract the RADIUS of cl

Discussion

46.	How to calculate dipole moment of an atom by vector form ???? EXPLAIN IN DETAIL
Answer» Answer: a pair of equal and opposite CHARGES seperate by SMALL DISTANCE called vector distance is called dipole MOMENT. To calculate it we use formula : vector p= q(vector 2l) . where p is dipole moment and q is magnitude of one of the CHANGE and 2l distance between them. distance is too small. hope it helps you

46.

How to calculate dipole moment of an atom by vector form ???? EXPLAIN IN DETAIL

Answer»

Answer:

a pair of equal and opposite CHARGES seperate by SMALL DISTANCE called vector distance is called dipole MOMENT. To calculate it we use formula : vector p= q(vector 2l) . where p is dipole moment and q is magnitude of one of the CHANGE and 2l distance between them. distance is too small.

hope it helps you

Discussion

47.	All acids are not corresive how
Answer» Answer: minerals ACIDS have PH VALUE less than 4

47.

All acids are not corresive how

Answer»

Answer:

minerals ACIDS have PH VALUE less than 4

Discussion

48.	a mixture of 10 moles of h2s04 and hcl is mixed with 16 moles of naoh then percentage of hcl in the mixture
Answer» ANSWER: .... ... ...... .... ... ..... ...

48.

a mixture of 10 moles of h2s04 and hcl is mixed with 16 moles of naoh then percentage of hcl in the mixture

Answer»

ANSWER:

.... ... ...... .... ... ..... ...

Discussion

49.	What will happen when potassium hydroxide solution is added to lime water
Answer» Answer: no REACTION will take place as potassium and CALCIUM both are metals an will dissociate to form CATIONS and the only anions are HYDROXIDE IONS there are not other anions

49.

What will happen when potassium hydroxide solution is added to lime water

Answer»

Answer:

no REACTION will take place as potassium and CALCIUM both are metals an will dissociate to form CATIONS and the only anions are HYDROXIDE IONS there are not other anions

Discussion

50.	Do all the fruits and vegetables undergo browning
Answer» Answer: Browning can be observed in fruits such as apricot , pear , BANANAS , grapes and in VEGETABLES such as POTATOES LETTUCE , AUBERGINES.

50.

Do all the fruits and vegetables undergo browning

Answer»

Answer:

Browning can be observed in fruits such as apricot , pear , BANANAS , grapes and in VEGETABLES such as POTATOES LETTUCE , AUBERGINES.

Discussion

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