Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

-50kJ/cycle

Explanation:

Since it is a CYCLIC process, there is no net change in INTERNAL energy, i.e initial and final internal energies are equal.

Applying FIRST law of thermodynamics, which, mathematically is

ΔU = Q - W

Since its a cyclic process, ΔU = 0

Therefore,

Q = W

Hence, heat absorbed is -50kJ

ANSWER:

cesium

Explanation:

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Answer:

CALCIUM CHLORIDE has the ability to ABSORB water from mixtures and COMPOUNDS SURROUNDING it.

X = is the atomic relative MASS of the group 2 METAL.

X + 12 +16= 196

X + 28 = 196

X = 196 - 28

X = 168

the atomic relative mass of the atom of group 2 is 168

so the metal is tellerium

ANSWER:

answer is 656 NM.............

Explanation:

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Answer:

22 carret GOLD is an ALLOY of gold with SILVER and COPPER

Answer:

4) neither 1 nor 2

Explanation:

Accordingly, O-NItrophenol has intramolecular Hydrogen Bonding and both nitrogen and oxygen have VACANT ORBITALS nor they have any lone pair deficiencies. Adding to it, there is no scope of BACK bonding  so LEWIS acidity or basicity cannot be DEFINED over here. :-)

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*It is USED in the manufacture of fertilizers, dyes and explosives. Sodium ELEMENT is useful in the human body. It helps body cells transmit NERVE signals and regulate water LEVELS in tissues and blood. VARIOUS elements on the periodic table have numerous impacts on human welfare.......

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Seawater is transferred into CONSTRUCTED pits. Here it is kept for evaporation. We KNOW sea water has DISSOLVED salts. Evaporation is PHYSICAL process that converts water into vapours. So the water slowly evaporates and the SALT is left behind. This is how salt is separated from seawater.

These pits are kept clean and nothing from outside is added to them.

ANSWER:

THREE SIGNIFICANTS figures

Explanation:

Answer:

3) 3.4 EV

Explanation:

IONIZATION ENERGY = RH(Z/n^2)

= 13.6(1/4)

= 3.4 eV

ANSWER:

Answered

Explanation:

CHECK the ATTACHMENT

Answer:

Sodium metal reacts RAPIDLY with water to form a colourless BASIC solution of sodium hydroxide (NaOH) and hydrogen gas (H 2). The reaction CONTINUES even when the solution becomes basic. ... It is a highly exothermic reaction, and it may be even violent, and the water will get HOT.

Answer:CH3CH(Cl)2

Explanation:

ETHYNE is CH2-CH2 add a mole of HCL it gives CHLOROETHENE CH2CH(CL)

To add the second mole, we add using markonicoff rule, H is added to the Carbon with the highest no of hydrogen to give 1,1-dichloroethane CH3CH(Cl)2

बी – २६ महारानी/ बाग,
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दिनांक : २४.०१.२०१४

प्रिय मित्र सुरेश
सप्रेम नमस्ते ।

आशा है की तुम कुशल-मंगल होगे।

अपना ध्यान रखना और नौकरी में मान लगाकर काम करना।

मुझे यह जानकर बड़ी प्रसंता हुई कि तुम्हारी नौकरी लग गयी है। नई नौकरी मिलने पर तुम्हे बहुत – बहुत बधाई!

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तुम्हारा प्रिय मित्र,
राहुल

ANSWER:

Explanation:

1

ANSWER:

NAOH=23+16+1=40

Explanation:

MOLECULAR WEIGHT of NaOH is 40

Answer:

In response of the RTI , the sports ministry confirmed that it had not declared any sport or GAME as the national game . This makes our wonder why hockey has so long been KNOWN as the national sport of India . The Indians hockey team won six olympic gold medals from 1928 to 1956 and 11 until 1980 .

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ANSWER:

q=it=2×3600×5=7200×5=36000C

q=3.6×10^4

Explanation:

answer is OPTION no 4

Answer:

oxidation state of Sulphur is +6

Explanation:

because OXYGEN SHOWS -2 oxidation state

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Answer:

SILVER article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen SULPHIDE (H2S) present in air. The PHENOMENON is called corrosion. For silverparticularly, it is called tarnishing of silver.

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Answer:

The SIZE of NE is greater than F EXPLAIN why?

Explanation:

<U>QUESTION : why we use MERCURY for measuring temp?

ANSWER : Mercury is the only one in liquid state at room TEMPERATURE. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is NOTABLE when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.

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ANSWER:

the colour of LIME WATER turn WHITISH

ANSWER:

It can be

Explanation:

Atoms do not EXIST independently and that LED to the creation of the UNIVERSE!There are some atoms which do exist freely known as Noble gases (Noble as they do not react). Other Atoms are not considered to be STABLE as they do not have 8 ELECTRONS in their outermost shell

Answer:

❤️❤️Example: What is the oxidation state of sulfur in SO2? RULE 5 says that the sum of oxidation numbers for neutral compounds must be 0. There are two oxygens, and oxygen has an oxidation number of -2, according to rule 3. Therefore, sulfur should have an oxidation number of +4, because +4 + (2 * (-2)) = 0.❤️❤️

Explanation:

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ANSWER:

POTASSIUM have more METALLIC CHARACTER.

HI..

1. Compounds

2. Valency

3. Ions

4. FORCE of attraction

5. Heterogeneous

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Answer:

1. KCL --------> K+ + Cl-

2. CaCl2 -------> Ca+2 + 2Cl

3. CaF2 --------> Ca+2 + 2F

4. AlCl3 ---------> Al+3 + 3Cl

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ANSWER:

PLZ REFER to ATTACHMENT

Answer:

6.22×10(POWER 23)×2× ACETALDEHYDE MASS

Answer:

on diluting any solution the amount of HYDRONIUM ion INCREASES in the solution and property of acidic or basic decrease.as on diluting acidic solution its ph will INCREASE and on diluting BASE its ph decreases.

A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. EXAMPLES: IRON and OXYGEN combining to MAKE rust.

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Answer:

GRIGNARD REACTION With Alcohols If there are any alcohols on a carbon CHAIN, then the Grignard reagent will react with the hydrogen on the alcohol before it will react with the carbonyl carbon. ... The same thing occurs if WATER is ADDED to the reaction before the Grignard reagent has reacted with the aldehyde/ketone.

Answer:

Mg^2 so4^2

to magnesium has VALENCY to any SOFA has valency to THEREFORE 2 AND2 CUT out and brings 1

mg^2 so4^2

↘ ↙

mgso4

Explanation:

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chemical reaction involving the REARRANGEMENT of the ATOMS of one or more substances and a CHANGE in their chemical properties or composition, resulting in the formation of at least one new substance: The formation of rust on iron is a chemical change.

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HIII......................

The two significant figure of 1.43 will be 1.4 cm3.

Two significant FIGURES we have to take two DIGITS. But it is not APPLIED in every digits.

For EXAMPLE :

In 0.0026, there are only two significant figures as we don't count the ZEROES of the zeroes are not between non-zero digit.

In 1.430, there are 4 digits that are significant. Here, we count the zero because it is in the right of the decimal point.

ANSWER:

CHEMICAL reaction, a PROCESS in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction REARRANGES the constituent ATOMS of the reactants to create different substances as products.

Answer:

in H2 LINKED by SINGLE hydrogen BOND

but in CO2 have two DOUBLE bonds

Answer:

metals low in REACTIVITY series are obtained by the ... are obtained from their compounds by reduction process also ... C) Metal Z which is HIGH in the reactivity series.

That is, we follow the three important RULES: Aufbau's Principle, Pauli-exclusion principle, and Hund's Rule. The electronic configuration of CATIONS is assigned by REMOVING electrons first in the outermost p ORBITAL, followed by the s orbital and finally the d orbitals (if any more electrons need to be removed).

ANSWER:

here's is your answer

Explanation:

(B)is the answer

Explanation:

In Parkinson's disease, CERTAIN nerve cells (NEURONS) in the brain gradually break down or die. Many of the symptoms are due to a loss of neurons that produce a chemical messenger in your brain called DOPAMINE. When dopamine levels decrease, it CAUSES ABNORMAL brain activity, leading to symptoms of Parkinson's disease.

Since CYCLOHEXANE and hexane are both in the same CATEGORY of compounds KNOWN as hydrocarbons, and since they both have approximately the same molecular mass, the compound with the greater surface area will have the greater BOILING POINT because it will have the greater intermolecular London forces