75607 + Interview Questions in Secondary School in Science

1.	How many Temperature of petrol
Answer» I THINK it is NEARLY about 38°C

Discussion

2.	Definition of watet cylcle
Answer» The water cycle is the process in which the water gets evaporated from water bodies, after GETTING to a certain HIGHT it gets CONDENSED and presipitate in the form of rain , SNOW , etc.. I HOPE I HELPED YOU.....

Discussion

3.	Explain dwarfism and which gland is responsibleand answer the whole question only
Answer» Dwarfism: Dwarfism is characterized by short stature. Technically, that means an adult height of 4 feet 10 INCHES or under, according to the advocacy group LITTLE People of America (LPA). can be caused by any one of more than 300 conditions, most of which are genetic. The most COMMON type is called achondroplasia. can and most often does happen in families where both parents are of average height. In fact, 4 out of 5 of children with achondroplasia are born to average-size parents. Thyroid is responsible for dwarfism.

3.

Explain dwarfism and which gland is responsibleand answer the whole question only

Answer»

Dwarfism:

Dwarfism is characterized by short stature. Technically, that means an adult height of 4 feet 10 INCHES or under, according to the advocacy group LITTLE People of America (LPA).

can be caused by any one of more than 300 conditions, most of which are genetic. The most COMMON type is called achondroplasia.

can and most often does happen in families where both parents are of average height. In fact, 4 out of 5 of children with achondroplasia are born to average-size parents.

Thyroid is responsible for dwarfism.

Discussion

4.	What are the three types in which the elements are generally classified?
Answer» METALS, non metals and metalloids. The following thing in our survey is to arrange the components into three gatherings. These three gatherings are: metals, nonmetals, and latent GASES. How about we take a gander at where these gatherings are situated on the INTERMITTENT table and relate them with the capacity to LOSE and PICK up electrons.

4.

What are the three types in which the elements are generally classified?

Answer»

METALS, non metals and metalloids. The following thing in our survey is to arrange the components into three gatherings.

These three gatherings are: metals, nonmetals, and latent GASES.

How about we take a gander at where these gatherings are situated on the INTERMITTENT table and relate them with the capacity to LOSE and PICK up electrons.

Discussion

5.	Hlo....gud evening frnds....what is radioactivity?
Answer» The spontaneous emission of IONIZING radiations caused by the heavy nucleus of an atom i.e. the nucleus containing subatomic particles like electrons , protons etc. in an excess amount..... this heavy nucleus becomes unstable and emmits these particles in the form of highly IONIZED waves which are CALLED radiations....

Discussion

6.	General science 7th
Answer» BHAI KYA GENERAL SCIENCE 7TH

Discussion

7.	Which fuel catches fire easily? why .
Answer» PETROL as it is FLAMMABLE

Discussion

8.	Give scientific reasons - Lemon sharbat has sweet, sour and salty taste and it can be poured in a glass.
Answer» Lemon sharbat has sweet, acrid and SALTY taste and it can be poured in a glass. Since lemon is citrus extract and CORROSIVE taste harsh so lemon sharbat taste has sweet, acrid, salty. In this ACTION you will encounter how JOINING a sweet and acrid taste MAKES an intriguing knowledge.

8.

Give scientific reasons - Lemon sharbat has sweet, sour and salty taste and it can be poured in a glass.

Answer»

Lemon sharbat has sweet, acrid and SALTY taste and it can be poured in a glass.

Since lemon is citrus extract and CORROSIVE taste harsh so lemon sharbat taste has sweet, acrid, salty.

In this ACTION you will encounter how JOINING a sweet and acrid taste MAKES an intriguing knowledge.

Discussion

9.	Write the names and symbols of the constituent elements and identify their valencies from the molecular formula given below.KCl, HBr, MgBr2, K2O, NaH, CaCl2, CCl4, HI, H2S, Na2S, FeS, BaCl2
Answer» 1 potassium chloride HYDROGEN bromide potassium oxide may be this NaOH IE sodium hydroxide calcium chloride CARBON tetrachloride hydrogen sulphide hydrogen iodide sodium sulphide iron sulphide barium chloride if this will HELP U then mark it as brainliest

Discussion

10.	Give scientific reasons - Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.
Answer» SINCE they both are DIVERSE components however when they meet up they FRAME another compound which quenches the fire. Combustibility is the capacity of a burnable MATERIAL with a sufficient supply of oxygen to maintain ENOUGH warmth vitality to keep a fire following it has been lighted.

10.

Give scientific reasons - Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.

Answer»

SINCE they both are DIVERSE components however when they meet up they FRAME another compound which quenches the fire.

Combustibility is the capacity of a burnable MATERIAL with a sufficient supply of oxygen to maintain ENOUGH warmth vitality to keep a fire following it has been lighted.

Discussion

11.	a moving car is expericencing 100N force of wind in the opposite direction and 120N force of friction. What should be the force of engine so that the net force is 280N in the forward direction
Answer» TOTAL FORCE in BACKWARD direction=100+120=220N. the NET force=force in forward-force in backward. so 280=force in forward-220 so force in forward=280+220=500N

Discussion

12.	Who created nylon and in which year and in which company
Answer» NYLON WAS FIRSTLY FOUNDED OUT BY ''WALLACE HUME CAROTHERS'' AT DUPONT'S ON 28TH OF THE FEBURARY IN 1935

Discussion

13.	0.002 M kOH calculate pH
Answer» (d) 0.002 M KOH KOH ↔ K+ + OH- [OH-] = [KOH] [OH-] = 0.002 pOH = - LOG [OH-] =-log[0.002] = 2.69 pH= 14-2.69 = 11.70

13.

0.002 M kOH calculate pH

Answer»

(d) 0.002 M KOH

KOH ↔ K+ + OH-

[OH-] = [KOH]

[OH-] = 0.002

pOH = - LOG [OH-] =-log[0.002] = 2.69

pH= 14-2.69 = 11.70

Discussion

14.	Differenciate between arteries and veins with 5 points for class 10
Answer» CHOOSE any FIVE which you FEEL is SUITABLE for you.

Discussion

15.	In one sample of brass, the following ingredients were found : copper (70%) and zinc (30%). Identify the solvent, solute and solution from these.
Answer» Arrangement – BRASS, Solute – Zinc and Solvent – Copper. A straightforward arrangement is essentially TWO substances that are EQUALLY combined. One of them is KNOWN as the solute and the other is the dissolvable. A solute is the substance to be broken up (SUGAR). The dissolvable is the one doing the dissolving (water).

15.

In one sample of brass, the following ingredients were found : copper (70%) and zinc (30%). Identify the solvent, solute and solution from these.

Answer»

Arrangement – BRASS, Solute – Zinc and Solvent – Copper.

A straightforward arrangement is essentially TWO substances that are EQUALLY combined.

One of them is KNOWN as the solute and the other is the dissolvable.

A solute is the substance to be broken up (SUGAR).

The dissolvable is the one doing the dissolving (water).

Discussion

16.	Give two examples eacha. Liquid elementb. Gaseous elementc. Solid elementd. Homogeneous mixturee. Colloidf. Organic compoundg. Complex compoundh. Inorganic compoundi. Metalloidj. Element with valency 1k. Element with valency 2
Answer» A. MERCURY, Gallium b. HYDROGEN, Oxygen c. Sodium, Calcium d. Water, Plasma e. Milk, Gelatin f. Alcohol, Ether g. OXALATE, Double Salt h. CARBON Monoxide, Carbon Dioxide i. Silicon, Boron j. Sodium, Potassium k. Magnesium, Calcium Plz Plz Plz mark as brainliest

Discussion

17.	Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen. Identify the four compounds in this process and name their types.
Answer» It can be changed over into synthetic compounds required for development of plant cells, for example, cellulose. It can be changed over into starch, a capacity particle that can be changed over back to glucose when the plant REQUIRES it. It can be separated amid the PROCEDURE of BREATH, discharging vitality put away in the glucose particles.

17.

Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen. Identify the four compounds in this process and name their types.

Answer»

It can be changed over into synthetic compounds required for development of plant cells, for example, cellulose.

It can be changed over into starch, a capacity particle that can be changed over back to glucose when the plant REQUIRES it.

It can be separated amid the PROCEDURE of BREATH, discharging vitality put away in the glucose particles.

Discussion

18.	In our blood iron is present but why they not rust
Answer» because that's not MATERIAL

Discussion

19.	write one equation each for decomposition reaction where energy is supplied oin the form of heat ,light or electricity
Answer» heat (thermal decomposition ) EG CaCO3 HEAT CaO + Co2 SUNLIGHT ( photochemical decomposition) eg 2AgCl SUNLIGHT 2AG + Cl2 electricity ( electrical decomposition ) eg 2H2O ELECTRICITY 2H2 + O2

19.

write one equation each for decomposition reaction where energy is supplied oin the form of heat ,light or electricity

Answer»

heat (thermal decomposition )

EG CaCO3 HEAT CaO + Co2

SUNLIGHT ( photochemical decomposition)

eg 2AgCl SUNLIGHT 2AG + Cl2

electricity ( electrical decomposition )

eg 2H2O ELECTRICITY 2H2 + O2

Discussion

20.	What is pasteurization why it is so important
Answer» Pasteurization is a process in which packed or NON packed FOODS are intend to MILD heat. it is done to REDUCE harmful pathogens and spoilage organisms

Discussion

21.	Valency of carbon is 4 and that of oxygen is 2. From this, we understand that there are ...... chemical bond/bonds between the carbon atom and one oxygen atom in the compound-carbon dioxide.i. 1 ii. 2 iii. 3 iv. 4
Answer» The structure of CO2 molecule is linear SHAPED as shown below O=C=O hence , this. clarifies that one oxygen atom and a CARBON atom has 2 bonds ,. one is sigma bond and other is pie bond. thus OPTION. 2 is CORRECT

Discussion

22.	Water, mercury and bromine are similar to each other, because three are ........ .i. liquids ii. compounds iii. nonmetals iv. elements
Answer» Bromine is a fluid on the grounds that the intermolecular powers are sufficiently solid with the goal that it doesn't VAPOURISE. They are added to furniture froth, plastic HOUSINGS for gadgets and materials to make them less combustible. Br shapes DIATOMIC particles and VAN der Waals associations are adequately solid. Silver ANYWAY a strong with solid metallic holding is unquestionably.

22.

Water, mercury and bromine are similar to each other, because three are ........ .i. liquids ii. compounds iii. nonmetals iv. elements

Answer»

Bromine is a fluid on the grounds that the intermolecular powers are sufficiently solid with the goal that it doesn't VAPOURISE.

They are added to furniture froth, plastic HOUSINGS for gadgets and materials to make them less combustible.

Br shapes DIATOMIC particles and VAN der Waals associations are adequately solid.

Silver ANYWAY a strong with solid metallic holding is unquestionably.

Discussion

23.	Milk is an example of type of matter called ........ .i. solution ii. homogeneous mixtureiii. heterogeneous mixture iv. suspension
Answer» Drain is a CASE of sort of issue called heterogeneous blend. Our glass of ice water is a blend SINCE we can without MUCH of a stretch separate the ice from the fluid water by filtration. On the off chance that a homogeneous material can't be isolated into VARIOUS segments, at that point it is known as a substance.

23.

Milk is an example of type of matter called ........ .i. solution ii. homogeneous mixtureiii. heterogeneous mixture iv. suspension

Answer»

Drain is a CASE of sort of issue called heterogeneous blend.

Our glass of ice water is a blend SINCE we can without MUCH of a stretch separate the ice from the fluid water by filtration.

On the off chance that a homogeneous material can't be isolated into VARIOUS segments, at that point it is known as a substance.

Discussion

24.	Identify the odd term out and explain.a. Gold, silver, copper, brassb. Hydrogen, hydrogen peroxide, carbondioxide, water vapour.c. Milk, lemon juice, carbon, steel.d. Water, mercury, bromine, petrol.e. Sugar, salt, baking soda, blue vitriol.f. Hydrogen, sodium, potassium, carbon.
Answer» A.brass. the other THREE are METALS. b.hydrogen peroxide. the other three are presented in atmosphere c.steel. the other three are USED for facial d.bromine. the other three are LIQUID e.blue vitriol. the other three are solid F. carbon. the other three are chemical components

Discussion

25.	Define neutralization give an example of a neutralization reaction
Answer» A neutralization reaction is one in which an acid or an acid oxide REACTS with a BASE or basic oxide to form SALT and water...... A GENERAL equation is.... HX +MOH-------}MX + HOH The example is HCl + NaOH---------} NaCl + H2O. I HOPE I HELPED YOU...... PLEASE MARK IT AS BRAINLIST IF IT'S HELPFUL.....

Discussion

26.	Jab lohe ki keel ko coper sulfid k villiyan mai duboya jata h to villiyan ka rang ku badal jata h
Answer» Because of the DISPLACEMENT REACTION.

Discussion

27.	what is difference between displacement and double displacement reactions write equation for these reactions
Answer» FOUND your question's ANSWER on brainly itself! HOPE it HELPS :)

Discussion

28.	Example of a reveversible or reversible
Answer» REVERSIBLE ..CHANGE of ICE and WATER

Discussion

29.	Shukranu ka Nirman kaise hota hai
Answer» फॉर्मेशन ऑफ स्पोर्ट्स इस कंट्रोल्ड बाय द टेस्टिस एंड द टेस्ट शुक्र जनन ट्रिब्यूल

Discussion

30.	Matter that contain two or more constituent substances is called ........ .i. mixture ii. compoundiii. element iv. metalloid
Answer» Matter can be separated into two classifications: unadulterated substances and blends. Unadulterated substances are additionally separated into components and mixes. Blends are PHYSICALLY joined structures that can be isolated into their UNIQUE segments. A compound SUBSTANCE is made out of one sort of particle or atom.

30.

Matter that contain two or more constituent substances is called ........ .i. mixture ii. compoundiii. element iv. metalloid

Answer»

Matter can be separated into two classifications: unadulterated substances and blends.

Unadulterated substances are additionally separated into components and mixes.

Blends are PHYSICALLY joined structures that can be isolated into their UNIQUE segments.

A compound SUBSTANCE is made out of one sort of particle or atom.

Discussion

31.	Matter is classified into the types mixture, compound and element, by applying the criterion ........ .i. states of matter ii. phases of mattersiii. chemical composition of matteriv. all of these
Answer» MATTER is arranged into the sort's blend, compound and COMPONENT, by applying the standard conditions of issue, PERIODS of issues and concoction STRUCTURE of issue. So also, blends are additionally grouped into types; homogeneous blends and heterogeneous blends: An unadulterated substance can be either a component or a compound.

31.

Matter is classified into the types mixture, compound and element, by applying the criterion ........ .i. states of matter ii. phases of mattersiii. chemical composition of matteriv. all of these

Answer»

MATTER is arranged into the sort's blend, compound and COMPONENT, by applying the standard conditions of issue, PERIODS of issues and concoction STRUCTURE of issue.

So also, blends are additionally grouped into types; homogeneous blends and heterogeneous blends:

An unadulterated substance can be either a component or a compound.

Discussion

32.	The intermolecular force is ........ in the particles of solid.i. minimum ii. moderate iii. maximum iv. indefinite
Answer» Intermolecular power alludes to the power that EXISTS between at least two particles. Intermolecular power of FASCINATION is most extreme in solids. This is on the grounds that ATOMS in strong stay near each other which distribute an unequivocal shape to the articles that are strong. It is lesser in fluids and minimum in the GASES.

32.

The intermolecular force is ........ in the particles of solid.i. minimum ii. moderate iii. maximum iv. indefinite

Answer»

Intermolecular power alludes to the power that EXISTS between at least two particles.

Intermolecular power of FASCINATION is most extreme in solids.

This is on the grounds that ATOMS in strong stay near each other which distribute an unequivocal shape to the articles that are strong.

It is lesser in fluids and minimum in the GASES.

Discussion

33.	How do you measure the time of one swing of a pendulum accrately consult with your textbook
Answer» TIME is MEASURED with SECONDS

Discussion

34.	Pathogen of enteritis disease
Answer» It is CAUSED by serratia.

Discussion

35.	Define bob of a pendulum
Answer» It is an MASS which is CONNECTED to the point of SUSPENSION by a WEIGHTLESS WIRE... . I HOPE I HELPED YOU........

Discussion

36.	Please help me with dis
Answer» It's ANSWER is c) which is RESONANCE HOPE it will help U ......☺️☺️

Discussion

37.	what are strong and weak acids? identify the strong and weak acid from the following list : hydrochloric acid Acetic Acid formic acid and nitric acid
Answer» HYDROCHLORIC acid,. FORMIC acid are STRONG other two are weak acid

Discussion

38.	Plz tell this plzzz ch is motion class 9
Answer» USE v=u+at u=0,a=5m/s^2 ,t=5sec put the VALUE in eq v=0+5.5 v=25m/s

Discussion

39.	The valencies of the atom H, O and N are 1, 2 and 3 respectively. The molecular formulae of these gaseous elements are H2, O2, and N2 respectively. How many chemical bonds are there in each of these molecules?
Answer» In hydrogen there is only 1 BOND in O there are 2 & in N there are 3 bonds PRESENT. Sulfur atoms have been known to participate in hydrogen bonds (H-bonds) and these sulfur-containing H-bonds (SCHBs) are suggested to play important roles in certain biological PROCESSES.

39.

The valencies of the atom H, O and N are 1, 2 and 3 respectively. The molecular formulae of these gaseous elements are H2, O2, and N2 respectively. How many chemical bonds are there in each of these molecules?

Answer»

In hydrogen there is only 1 BOND in O there are 2 & in N there are 3 bonds PRESENT.

Sulfur atoms have been known to participate in hydrogen bonds (H-bonds) and these sulfur-containing H-bonds (SCHBs) are suggested to play important roles in certain biological PROCESSES.

Discussion

40.	Tell me the name of this plant
Answer» MAY be this PLANT is NEEM

Discussion

41.	Deduce the molecular formulae of the compounds formed from the following pairs of elements.(i) H (valency) and O (valency 2)(ii) N (valency) and H (valency 1)(iii) Fe (valency) and S (valency 2)
Answer» H2O( WATER) NH3(AMMONIA) Fe2S3(ferric SULPHIDE)

Discussion

42.	What is Zindagi....???Hindi me ans de.. :D
Answer» ZINDAGI is FILLED with LOT of DIFFICULTIES

Discussion

43.	What does jowar contains
Answer» JOWAR CONTAINS 8.45 milligrams of iron in EVERY cup.

Discussion

44.	Describe the construction and working of electric bell with help of diagram
Answer» Construction and Working of an Electric Bell An electric bell consists of an iron core, on which is WOUND a wire as a coil. One end of the coil is connected to one terminal of a battery, and the other end to a steel rod that acts like a spring for the hammer touching the SCREW CONTACT. The other terminal of the battery is connected to the screw contact with a SWITCH in the middle. Working of an electric bell Electric current flows through the coil when the switch is ON, and the iron core acts as an electromagnet. The iron core attracts the hammer towards it. The hammer hits the bell and produces a sound. The circuit breaks at the screw contact when the hammer moves towards the iron core. At this point, the iron core ceases to be an electromagnet. The hammer is pulled back to its original position due to the spring ACTION of the steel rod, and then touches the contact again to complete the circuit. The circuit is completed and current flows through the coil again, and the hammer strikes the bell again. The process repeats itself and you hear a ringing sound since the hammer keeps hitting the bell, until the switch is released.

Discussion

45.	What is chemical symbol?
Answer» A chemical SYMBOL is the shortform of the name of an element. USUALLY, it is made up of one or two letters, but sometimes it is made up of THREE letters. The chemical symbols of all elements are LISTED in the periodic table. ... Some other chemical symbolsare the short forms of their LATIN names.

Discussion

46.	Steam produces more burns as compared to boiling water
Answer» Steam produces more burns as compared to BOILING WATER because it CONTAINS more LATENT heat of VAPORIZATION than boiling water

Discussion

47.	Prepare similar table of Information about various diseases like enteritis malaria plague a d i s
Answer» HEY here's the answer to your question... The answer is in the PICTURES so make sure u turn to see all of them...there are five pictures.. Hope it HELPS! Please MARK my answer as brainliest...

Discussion

48.	Energy in one mole of photon plank constant h =6.626×100000000000000
Answer» $6 \times {10}^{23} \times 6.626 \times {10}^{ - 34} \times 5 \times {10}^{14}$ ANSWER 1,98,780 JOULE

Discussion

49.	Write the composition of the following materials by means of chemical formulae and classify them accordingly.Name of the material Chemical formula/composition Type of matterWaterCarbonOxygenAirAluminiumBrassCarbon dioxide
Answer» Water ,. chemical FORMULAE is H2O. it is an inorganic substance. liquid in nature carbon ,. is solid in nature , ORGANIC compound symbol is C. oxygen is a gas in nature it occurs in form of MOLECULE i.e O2. aluminium is a solid i.e metal it's symbol is AL it is inorganic in nature

Discussion

50.	Classify the following matter into three groups: Cold drink, air, sharbat, soil, water, wood, cement.What are the states of matter that you used as criteria for theabove classification ?
Answer» Liquid COLD drink, SHARBAT , WATER, solid wood , cement, Gaseous air

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many Temperature of petrol

Definition of watet cylcle

Explain dwarfism and which gland is responsibleand answer the whole question only

What are the three types in which the elements are generally classified?

Hlo....gud evening frnds....what is radioactivity?

General science 7th

Which fuel catches fire easily? why .

Give scientific reasons - Lemon sharbat has sweet, sour and salty taste and it can be poured in a glass.

Write the names and symbols of the constituent elements and identify their valencies from the molecular formula given below.KCl, HBr, MgBr2, K2O, NaH, CaCl2, CCl4, HI, H2S, Na2S, FeS, BaCl2

Give scientific reasons - Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.

a moving car is expericencing 100N force of wind in the opposite direction and 120N force of friction. What should be the force of engine so that the net force is 280N in the forward direction

Who created nylon and in which year and in which company

0.002 M kOH calculate pH

Differenciate between arteries and veins with 5 points for class 10

In one sample of brass, the following ingredients were found : copper (70%) and zinc (30%). Identify the solvent, solute and solution from these.

Give two examples eacha. Liquid elementb. Gaseous elementc. Solid elementd. Homogeneous mixturee. Colloidf. Organic compoundg. Complex compoundh. Inorganic compoundi. Metalloidj. Element with valency 1k. Element with valency 2

Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen. Identify the four compounds in this process and name their types.

In our blood iron is present but why they not rust

write one equation each for decomposition reaction where energy is supplied oin the form of heat ,light or electricity

What is pasteurization why it is so important

Valency of carbon is 4 and that of oxygen is 2. From this, we understand that there are ...... chemical bond/bonds between the carbon atom and one oxygen atom in the compound-carbon dioxide.i. 1 ii. 2 iii. 3 iv. 4

Water, mercury and bromine are similar to each other, because three are ........ .i. liquids ii. compounds iii. nonmetals iv. elements

Milk is an example of type of matter called ........ .i. solution ii. homogeneous mixtureiii. heterogeneous mixture iv. suspension

Identify the odd term out and explain.a. Gold, silver, copper, brassb. Hydrogen, hydrogen peroxide, carbondioxide, water vapour.c. Milk, lemon juice, carbon, steel.d. Water, mercury, bromine, petrol.e. Sugar, salt, baking soda, blue vitriol.f. Hydrogen, sodium, potassium, carbon.

Define neutralization give an example of a neutralization reaction

Jab lohe ki keel ko coper sulfid k villiyan mai duboya jata h to villiyan ka rang ku badal jata h

what is difference between displacement and double displacement reactions write equation for these reactions

Example of a reveversible or reversible

Shukranu ka Nirman kaise hota hai

Matter that contain two or more constituent substances is called ........ .i. mixture ii. compoundiii. element iv. metalloid

Matter is classified into the types mixture, compound and element, by applying the criterion ........ .i. states of matter ii. phases of mattersiii. chemical composition of matteriv. all of these

The intermolecular force is ........ in the particles of solid.i. minimum ii. moderate iii. maximum iv. indefinite

How do you measure the time of one swing of a pendulum accrately consult with your textbook

Pathogen of enteritis disease

Define bob of a pendulum

Please help me with dis

what are strong and weak acids? identify the strong and weak acid from the following list : hydrochloric acid Acetic Acid formic acid and nitric acid

Plz tell this plzzz ch is motion class 9

The valencies of the atom H, O and N are 1, 2 and 3 respectively. The molecular formulae of these gaseous elements are H2, O2, and N2 respectively. How many chemical bonds are there in each of these molecules?

Tell me the name of this plant

Deduce the molecular formulae of the compounds formed from the following pairs of elements.(i) H (valency) and O (valency 2)(ii) N (valency) and H (valency 1)(iii) Fe (valency) and S (valency 2)

What is Zindagi....???Hindi me ans de.. :D

What does jowar contains

Describe the construction and working of electric bell with help of diagram

What is chemical symbol?

Steam produces more burns as compared to boiling water

Prepare similar table of Information about various diseases like enteritis malaria plague a d i s

Energy in one mole of photon plank constant h =6.626×100000000000000

Write the composition of the following materials by means of chemical formulae and classify them accordingly.Name of the material Chemical formula/composition Type of matterWaterCarbonOxygenAirAluminiumBrassCarbon dioxide

Classify the following matter into three groups: Cold drink, air, sharbat, soil, water, wood, cement.What are the states of matter that you used as criteria for theabove classification ?