Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

Because in most double DISPLACEMENT reaction of two IONIC compounds LEAD to the formation of an insoluble PRODUCT called precipitate. Hence it is known as precipitation reaction.

ANSWER:

ELECTRON AFFINITY of F

Explanation:

can be SEEN by REACTION...

ANSWER:

volume of oxygen USED = 280ml

volume of carbon di oxide = 560ml

Explanation:

here the concept of limiting agent is used

in reactant side maximum value of STOICHIOMETRIC coefficient is of CO(i.e2) THEREFORE here limiting agent is CO so full volume of CO is used i.e 560ml

So volume of Oxygen used is 560÷2 = 280ml

similarly volume of CO2 used is 560÷1 = 560ml

ANSWER:

ON WHAT BASIS?

EXPLANATION:

ANSWER:

Answer:ONION solution is an OLFACTORY indicator. Thus it changes its ODOUR.

*EXPLANATION*

Explanation:LiquidX is acidic in nature as it turns blue litmus red.

ANSWER:

KYA QUESTION HAI GAJAB

Answer:

HELLO my friend

Explanation:

HCl+NaOH→NaCl+H

2

O

number of me added xy xy 0 0

number of me left 0 0 xy xy

Normality of SALT solution =

Volume of solution in mL

number of MILLIEQUIVALENT

=

(x+y)+(x+y)

xy

N=

2(x+y)

xy

N

Answer:

HELLO my friend

Explanation:

These GASES all have similar properties under standard CONDITIONS: they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), NEON (Ne), Argon (Ar), Krypton (Kr), XENON (Xe), and Radon (Rn).

ANSWER:

The WAVELENGTH of LIMITING LINE of Lyman series is 911 A˚.

Answer:

What is lattice parameter formula?

CALCULATE the lattice CONSTANT, a, of the cubic unit CELL. If the space lattice is SC, the lattice constant is given by the formula a = [2 x r]. For example, the lattice constant of the SC-crystallized polonium is [2 x 0.167 nm], or 0.334 nm.

Answer:

C) –Cl.

Explanation:

Chlorine ATOM withdraws electrons by I EFFECT as it is more electronegative than CARBON atom. It donates electrons by RESONANCE effect by donating electron pair by electromeric effect.

NH in the POLYMER structure. Cotton is a cellulosic Fiber and hence it has a lot of —OH groups. Hence it can absorb more moisture while SYNTHETIC fibres like POLYESTER and nylon have no or LESS no of such hydrophilic groups and hence they absorb less moisture.

THANK YOU,

HOPE IT HELPS YOU.

ANSWER:

hi FRIENDS I KNOW that I am not sure if you have the call

Answer:

LEAD SULPHATE is USED in lithography and in weighting fabrics.

Answer:

An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. When an electric current flows through the coils, the rods become magnetic and attract a piece of iron attached to a clapper. The clapper hits the bell and MAKES it ring.

I hope it HELPS you

plz mark me as BRAINLIEST

ANSWER:

this is beacuase the sides of beaker are HOT and if we TOUCH the thermometer to the sides of beaker the thermometer will show RISING TEMPERATURE

Answer:

55.5 G

Explanation:

1mol of CACL2 = 111 g (40+71)

0.5 MOL of cacl2 = 111÷ 2=55.5 g

Answer:

In this activity, you will explore the energy changes that accompany chemical reactions. To understand the energy implications of chemical reactions, it’s important to keep in mind two key ideas:

It takes energy to break BONDS.

Energy is released when bonds are formed.

To understand this, consider the chemical reaction between vinegar (also known as acetic acid to chemists) and baking soda (known as sodium BICARBONATE). Before the atoms of acetic acid and sodium bicarbonate can be rearranged to form the products, the bonds between the atoms in those molecules must be broken, and because the atoms are attracted to one another, it takes energy to pull them apart.

file

Then, when the products are formed (sodium acetate, water, and CARBON dioxide) energy is released because atoms that have an attraction for one another are brought back together. Not every bond between atoms in the reactants is NECESSARILY broken during a chemical reaction, but some bonds are.

By comparing the energy used when bonds in the reactants are broken with the energy released when bonds in the products are formed, you can determine whether a chemical reaction releases energy or absorbs energy overall.

Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Chemical reactions that absorb (or USE) energy are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. If a chemical reaction absorbs as much energy as it releases, it is called isothermic—there is no net energy change.

But because we can’t observe bonds breaking or being formed, how can we distinguish between exothermic and endothermic chemical reactions?

Identifying Exothermic & Endothermic Reactions

There are two methods for distinguishing between exothermic and endothermic reactions.

Monitor temperature change

When energy is released in an exothermic reaction, the temperature of the reaction mixture increases. When energy is absorbed in an endothermic reaction, the temperature decreases. You can monitor changes in temperature by placing a thermometer in the reaction mixture.

Colloidal SOLUTIONS are the type of mixture, where the solute (tiny particles or colloids) is uniformly distributed in the solvent (liquid PHASE). The suspension is the mixture, where the solute does not GET dissolved, rather get suspended in the liquid and float FREELY in the MEDIUM.

Answer:

EXPLANATION:

a very GOOD example of SN2 MECHANISM is

CH3Cl +NaOH → CH3OH

RATE OF REACTION IS IN THE ORDER:

METHYL > PRIMARY HALIDE> SECONDARY HALIDE> TERTIARY HALIDE

Prahlada, endowed with INHERENT devotion and realisation, speaks of the VARIOUS ways in which GOD can be ...

nitric acid

What is Acid Rain? Acid rain, or acid deposition, is a broad term that includes any FORM of precipitation with acidic components, such as sulfuric or nitric acid that fall to the GROUND from the ATMOSPHERE in WET or dry forms.

Answer:

physical properties are-

they have force of attraction

they are continuously moving

they have spaces between them

they are made up of particles

chemical properties of MATTER

that can be observed when they undergoes changes to became different kind of matter INCLUDE reactivity , flamibilty, ability to rust

Answer:

(c ) is correct

Explanation:

given 0.1 M of agno3

i.e 0.1 MOLES of AgNo3 in 1000 ml or 1 LITRE

AgNo3 has ag3+ ions and no3- ion

i.e 0.1 moles of no3- ions

similarly 0.1 M of NACL means 0.1 moles of nacl in 1000 ml or 1 litre

molarity of no3 ions = no. of moles / VOLUME of SOL.

= 0.1/2

= 0.05 M

mark me the brainliest and please follow me

In chemistry, the law of definite proportion, sometimes called Proust's law, or law of constant composition STATES that a given chemical compound always CONTAIN its COMPONENT elements in fixed ratio (by mass) and does not depend on its SOURCE and method of preparation.

Please mark the answer as brainliest.

ANSWER:

HYDROCARBON exploration (or OIL and gas exploration) is the search by petroleum geologists and geophysicists for deposits of hydrocarbons, particularly petroleum and NATURAL gas, in the EARTH using petroleum geology.

Explanation:

please mark brainliest

and thanx also

EXPLANATION:

HOPE this HELPS you BESTIE ❤️❤️

ANSWER:

is this is your answer or not

ANSWER:

Explanation:

due to inert pair EFFECT,

INERT PAIR EFFECT; it is reluctance of s orbital to take part in a chemical REACTION down the group this inert pair increases thus +4 oxidation STATE decreases

ANSWER:

the difference between plant FIBRE and animal fibre are plant fibres is obtained from the plants while the animal fibres are obtained from animal. Plants fibres examples are COTTON and jute while the animal fibre examples are wool and silk .

I hope it HELPS you

plz mark me as BRAINLIEST

Answer:

the correct ORDER of VAPOUR PRESSURE is Z

Explanation:

this order can be explained on the basis of vapour pressure values the liquid whose vapour will condense early MEANS it has high vapour pressure value accroding to the question the order is z

Explanation:

• RIPENING of fruits is a chemical CHANGES. During ripening the PIGMENT present in the skin of the fruit changes and this can not be reversed BACK. it is a chemical change as once a fruit ripens it cannot turn RAW again.

Explanation:

4fe(III)+3O2------------->2FE2O3

ANSWER: approximately 97

Explanation:

d = 10.3 g/cm^3

a = 314 pm =314 x 10^-10 cm

in CASE of bcc, z = 2

d=M x z / Na {AVOGADRO no} x a^3

M= Na x a^3 x d / z

  = 6.022 x 10^23 x 314 x 10 ^-10 x 10.3 / 2

  = 97.381762 x 10^19

Answer:

x=1/6and y=1/3 is the answer.

EXPLANATION:

given that,

x/4-3 = y/4

x/1=y/4

4x=y

4x+y=0..........eq1

1/2x-y=-2

1=-4x+2y.........eq2

on ADDING both the equations

4x+y=0

-4x+2y=1

________

3y=1

y=1/3

putting the value of y in eq1

4x+1/3=0

12x+1/3=0

12x+1=3

12x=3-1

12x=2

x=2/12

x=1/6

if you LIKE my answer then you have to follow me and PLEASE MAKE me brainliest...

Explanation:

WHEN WE EAT ANY SUGAR SUBSTANCE OR ETC...,,

AN ACIDIC MEDIUM CREATS UN THE MOUTH WHICH CASUES TOOTH DECAY AT PH OF 5.5

HENCE TO PREVENT IT...WASH YOUR MOUTH AFTER YOUR MEAL OR BRUSH UR TEETH...

PLZ MARK ME AS BRAINLIEST IF U LIKE...

Answer:

Explanation:NaCN is the CHEMICAL formula of SODIUM CYANIDE, a very toxic substance.

Answer:

1 or 4 is WRITE one

please MARK me as BRANLIEST

ANSWER:

HELLO MATE ✌️

Explanation:

here is your answer DEAR ✍️

Answer:

Solubility indicates the maximum AMOUNT of a SUBSTANCE that can be dissolved in a solvent at a given TEMPERATURE. Such a solution is called saturated. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to CALCULATE the solubility in g/100g .

ANSWER:

Ammonia exists as a gas at NORMAL TEMPERATURE, so it is referred to as "gas", not as "vapor". That is because, ammonia remains in gaseous state at ROOM temperature, so it's called a gas.

Explanation:

please FOLLOW me

Answer:

solid eg WOOD, ice,paper

liquid eg WATER,juice,milk

gas eg HYDROGEN,STEAM,corbon

Answer:

Molarity can be found with this formula: molarity=number of moles/volume (L) We KNOW the volume, which is. 500mL = 0.5 L. ...

We have 10.6g/106g/mol = 0.1mol. From n = MV, 0.1 = M X 0.5, so M = 0.1/0.5 = 0.2. The solution is 0.2M. 1.4K views. ...

(10.6 x 1000)/(106 x 500) =0.2 M. 468 views.

ANSWER:

SEE the FOLLOWING PIC....

ANSWER:

SORRY I can't UNDERSTAND the QUESTION

Steam has got more energy stored in it. It is the latent HEAT of vaporization, 540 calories per gram.

In ADDITION to this, steam is pressurized and its TEMPERATURE goes still HIGHER. Steam is more fluent than water. Water heats what ever is immersed in it. Steam is like air. It covers the object from all sides and heat it.

Steam can do mechanical work also which HOT water cannot do. Now a days electricity is used, so this point is not so valid.

Only in house hold water can be used not in industries.

Answer:

Particle sizes are measured in microns (μ). A micron is 1/1000 mm. or 1/25,400 in. A millimicron (mμ) is 1/1000 of a micron, or 1/1,000,000 mm. USUALLY particle size is designated as the AVERAGE diameter in microns, ALTHOUGH some literature REPORTS particle radius

Answer:

option a is correct one

Explanation:

A  - 2   88 g of co 2 = 88/44= 2 mol

B -  3, 1  mol of H2O CONTAINS 6.022×10^23 molecules

C  - 1   5.6 L of o2 = 5.6/22.4 = 0.25 mol

D  - 5   96g of o2 = 96/32 = 3 mol

E -  4   1 mol of any gas contain 6.022×10^23 molecules

ANSWER:

bvgfktnt rxtgunhxdoodycaguthiyefithrc

Explanation:

ugnjdhfyufifjifruyu

Potential Energy is the stored energy in an object or system because of its position or CONFIGURATION. KINETIC energy of an object is relative to other moving and stationary objects in its immediate environment. ... Kinetic energy can be transferred from ONE moving object to another, SAY, in COLLISIONS.