Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

When zinc GRANULES are kept in COPPER sulphate solution, the blue colour of copper sulphate DISAPPEARS and the solution becomes colourless. ... Hence, copper cannot displace zinc from a compound. Hence, no reaction takes place when copper TURNINGS are kept in zinc sulphate solution.

Explanation:

In practice, any acid that yields a concentration of HYDROGEN ions with a molarity greater than 1 will be calculated to have a negative pH. ... This is because GLASS pH electrodes SUFFER from a defect called 'acid error' which causes them to MEASURE a HIGHER pH than the real pH.

ANSWER:

Q2 273Kelvinsand 373Kelvins

Explanation:

अमोनिया का औद्योगिक उत्पादन हेबर प्रक्रम से किया जाता है। शुष्क नाइट्रोजन तथा हाइड्रोजन को 1 : 3 में लेकर उच्च दाब (200 से 300 वायुमण्डल) तथा ताप । (723 K से 773 K) पर AL2O3 मिश्रित आयरन उत्प्रेरक पर प्रवाहित करने पर NH3 प्राप्त होती है। जिसे द्रवित करके तरल रूप में प्राप्त कर लेते हैं

Answer:

HOLA mate ...........

can U ASK in english.......XD...

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sorry

I don't no ANSWER

रेडॉन एक रेडियोएक्टिव तत्व है जिसका अर्द्ध-आयु काल अत्यन्त कम होता है। इसलिये रेडॉन के रसायन का अध्ययन करना कठिन थाl

Answer:

PLEASE POST your QUESTION in ENGLISH language. there are many people who don't know your language and I am one of them too.

Answer:

PLEASE POST your question in English language. there are many PEOPLE who don't KNOW your language and I am one of them too.

Some example of physical change are freezing of water, melting of WAX, BOILING of water, etc. A few examples of chemical change are DIGESTION of food, burning of coal, rusting, etc.

ANSWER:

what TYPE is this

Explanation:

ANSWER:

I don't UNDERSTAND this QUESTION.....

Answer:6

Explanation:According to Pauli's exclusion principle, each orbital can ACCOMMODATE a MAXIMUM of 2 ELECTRONS.

⟹ 5P subshell can accommodate maximum 6 electrons.

ANSWER:

Because it is STABLE that's why its USED for that PURPOSE

Answer:

SORRY bro I can't understand HINDI can U translate in English LANGUAGE

SORRY, i couldn't UNDERSTAND hindi. can u PLS translate it to english

ANSWER:

CL2 की विरंजक क्रिया ऑक्सीकरण के कारण होती है। नमी अथवा जलीय विलयन की उपस्थिति में Cl2 नवजात ऑक्सीजन मुक्त करती है। यह नवजात ऑक्सीजन वनस्पतियों तथा कार्बनिक द्रव्यों में उपस्थित रंगीन पदार्थों का ऑक्सीकरण करके उन्हें रंगहीन पदार्थ में परिवर्तित कर देती है। रंगीन पदार्थ + [O] → रंगहीन पदार्थ अत: Cl2 की विरंजक क्रिया ऑक्सीकरण के कारण होती है।

Answer:

please post your QUESTION in English language. there are many PEOPLE who don't know your language and I am ONE of them too.

ANSWER:

kyoki ICL me clorine JYADA reactive HOTA IODINE ka compare me

ANSWER:

PLEASE post your question in English LANGUAGE. there are many PEOPLE who don't know your language and I am ONE of them too.

Answer:

Explanation:

A material is brittle if, when subjected to STRESS, it breaks with little elastic deformation and without significant plastic deformation. Brittle materials absorb relatively little energy prior to fracture, even those of high strength. Breaking is often accompanied by a snapping sound. Brittle materials include most ceramics and glasses (which do not deform plastically) and some polymers, such as PMMA and polystyrene. Many steels become brittle at low temperatures (see ductile-brittle transition temperature), depending on their composition and processing.

When used in materials science, it is generally applied to materials that fail when there is little or no plastic deformation before failure. One proof is to match the broken halves, which should fit exactly since no plastic deformation has occurred.

When a material has reached the limit of its strength, it usually has the option of either deformation or fracture. A NATURALLY malleable metal can be made stronger by impeding the mechanisms of plastic deformation (REDUCING grain size, precipitation hardening, work hardening, etc.), but if this is TAKEN to an extreme, fracture becomes the more likely outcome, and the material can become brittle. Improving material toughness is, therefore, a balancing act.

Examples of brittle materials include cast iron, concrete, most ceramics and some glass products.

Hope it helps you.

ANSWER:

TURMERIC is ONE of these csn be used as an acid base indicator..... Vanilla essence is used as an indicator because of its smell which helps visually challenged people to realize the CHANGE in pH

Answer:

1 moles platinum to GRAMS =19.5 grams of platinum

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Answer:

A body covers 20m in 2 sec and 80 m in 4 seconds from the start along a straight line. If it is moving with constant acceleration, how much DISTANCE will it cover

Let the initial velocity of the body be u m/s; and the constsnt acceleration be a m/s². Then displacemet (distance covered) of the body after t second is given by

s = u t + ½ a t² ———————————-(1)

The body covers 20 m in 2S and 80 m in 4 s.

20 = u×2 + ½ a 2²; => 20 = 2 u + 2 a

u + a = 10 —————————————(2)

80 = u×4 + ½ a 4²; => 80 = 4 u + 8 a; this gives,

u + 2 a = 20 ——————————————(3)

Solving (2) and (3) for u and a we get

u = 0 m/s and a = 10 m/s² ————————(4)

To OBTAIN the distance covered in the next 4s we need to find the velocity at the beginning of this interval using,

v = u + a t => v = 0 m/s +

Answer:

A particle has a displacement of 40m along OX in the first 5s and 30m perpendicular to OX in

the NEXT 5s. The magnitude of average velocity of the particle during the time internal of 10s is

a) 6 ms–1 b) 7 ms–1 c) 8 ms–1 d) 5 ms–1 [

Explanation:

A body covers 20m in 2 sec and 80 m in 4 seconds from the start along a straight line. If it is moving with constant acceleration, how MUCH distance will it COVER in the

Let the initial velocity of the body be u m/s; and the constsnt acceleration be a m/s². Then displacemet (distance covered) of the body after t second is given by

s = u t + ½ a t² ———————————-(1)

The body covers 20 m in 2s and 80 m in 4 s.

20 = u×2 + ½ a 2²; => 20 = 2 u + 2 a

u + a = 10 —————————————(2)

80 = u×4 + ½ a 4²; => 80 = 4 u + 8 a; this gives,

u + 2 a = 20 ——————————————(3)

Solving (2) and (3) for u and a we get

u = 0 m/s and a = 10 m/s² ————————(4)

To obtain the distance covered in the next 4s we need to find the velocity at the beginning of this interval using,

v = u + a t => v = 0 m/s + 1

Answer:

Voltaic cells are based on SPONTANEOUS redox reactions. It is also POSSIBLE for

nonspontaneous redox reactions to occur, however, by using electrical energy to drive them. For EXAMPLE, electricity can be used to decompose MOLTEN sodium chloride into its component elements Na and Cl2. Such processes driven by an outside source of electrical energy are called electrolysis reactions and TAKE place in electrolytic cells

Explanation:

ANSWER:

heat is GIVEN out or absorbed

a precipitate is FORMED

Answer:

benzene is the METHOD WOULD be BETTER for the SYNTHESIS

ANSWER:

the answer should be àor C

ANSWER:

POWDERED MAGNESIUM is USED I THINK

Answer:

not in MATTER, but in material...the SIMILARITY in all the materials is tha all the materials is made up of matter

Explanation:

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Answer:

a) &b)

Explanation:

CAUSE in first reaction caO combines with co2 i.e.

carbon MONOXIDE combine with carbon dioxide and FORMS carbon Carbonate

similarly in 4th reaction

NH3 ammonia combines with hcl hydrochloric ACID and forms NH4cl i.e. ammonium chloride

BROMINE is HEAVIER than AIR .

HOPE it will HELP you

GiveN :

• TOTAL Pressure
• Mole fraction of
• Henry's Constant

To FinD :

• NUMBER of MOLES of Nitrogen

SolutioN :

As we know that :

Now, USE Henry's Law :

ANSWER:

evaporation of WATER is ENDOTHERMIC because it ABSORBS heat and RELEASES water into atmosphere

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ANSWER:

fe + s=fes

Explanation:

woh IRON SULPHIDE DEGA

Answer:

(1) C2H4 + O2 --> CO2 +H2O. ...

(2)4 Al (s) + 3 O2 (G) → 2 Al2O3 (s)

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ANSWER:

SO2 एक तीक्ष्ण गन्ध वाली गैस है। इसकी उपस्थिति को निम्नलिखित दो परीक्षणों से ज्ञात किया जा सकता है – (i) SO2 गुलाबी-बैंगनी रंग के अम्लीय पोटैशियम परमैंगनेट (VII) विलयन को MnO–4 के MN2+ आयन में अपचयन के कारण रंगहीन कर देती है।

Answer:

03 335.568 8896.फ़िजी

ANSWER:

दूसरे शब्दों में, रासायनिक आबन्ध वह परिघटना है जिसमें दो या दो से अधिक अणु या परमाणु एक दूसरे से आकर्षित होकर और जुड़कर एक नया अणु या आयन बनाते हैं (एक विशेष प्रकार के बन्धन 'धात्विक बन्धन' में यह प्रक्रिया भिन्न होती है)। यह प्रक्रिया सूक्ष्म स्तर पर होती है, लेकिन इसके परिणाम का स्थूल रूप में अवलोकन किया जा सकता है, क्योंकि यही प्रक्रिया अनेकानेक अणुओं और परमाणुओं के साथ होती है। गैस में ये नये अणु स्वतन्त्र रूप से मौजू़द रहते हैं, द्रव में अणु या आयन ढीले तौर पर जुडे रहते हैं और ठोस में ये एक आवर्ती (दुहराव वाले) ढाँचे में एक दूसरे से स्थिरता से जुड़े रहते हैं।

ANSWER:

O3 एक प्रबल ऑक्सीकारक की तरह क्यों क्रिया करती है? O3 शीघ्रता से अपघटित होकर नवजात ऑक्सीजन उत्पन्न करती है, जो विभिन्न पदार्थों को ऑक्सीकृत कर देती है। इसलिए यह प्रबल ऑक्सीकारक की तरह क्रिया करती है।

ANSWER:

The mole is the unit of measurement for amount of substance in the International System of Units. A mole of a substance or a mole of particles is defined as EXACTLY 6.02214076×10²³ particles, which may be ATOMS, molecules, ions, or electrons. In short, for particles 1 mol = 6.02214076×10²³.

Hope it helps you

Answer:

In normal life we rarely come across pure substances.

Most of these are mixtures containing two or more pure

substances. Their utility or importance in life depends

on their composition. For example, the properties of

brass (mixture of copper and ZINC) are quite different

from those of German silver (mixture of copper, zinc

and nickel) or BRONZE (mixture of copper and tin);

1 part per million (ppm) of fluoride ions in water

prevents tooth decay, while 1.5 ppm causes the tooth

to become mottled and high concentrations of fluoride

ions can be poisonous (for example, SODIUM fluoride is

used in rat poison); intravenous injections are always

dissolved in water CON

Answer:

The table can be used to PREDICT the PROPERTIES of elements, even those that have not yet been discovered. Columns (GROUPS) and rows (periods) indicate elements that share similar characteristics. The table MAKES trends in element properties apparent and easy to understand.

Explanation:

EXPLANATION:

hope it may helps

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Answer:

2h=he its wright

Explanation:

DELTA s is possitive

ANSWER:

d ithink so they VALUES MAYBE

Answer:

Na+H2o= NAOH +H(up)

Explanation:

when SODIUM reacts with WATER it forms sodium hydroxide and releases HYDROGEN in air

Displacement reaction is a reaction in which a less reactive ELEMENT is displaced by a more reactive element . Eg (B)

Double displacement reaction is reaction in which exchange of ions TAKE PLACE. Eg. (a)

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