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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 3601. |
Calculate the molarity of 116g NaCl dissolved in 500 mL of solution. M = mol/L Question 8 options: 2 M solution 1 M solution 4 M solution 3 M solution |
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Answer» plzz do follow.. |
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| 3602. |
Which change is temporary or reversible |
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Answer» Answer: The CHANGES that can be reversed or are a TEMPORARY conversion are reversible changes. The reactions that are reversible are reversible reactions. In such kinds of reaction, ONE substance is modified into another form but a NEW COMPOUND is not formed. |
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| 3603. |
Fill in the boxes given in above photo☝️IF ANYONE ANSWERS I WILL MARK HIM OR HER AS BRAINLIEST |
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Answer» funnel ink WATER |
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| 3604. |
How you might separate a mixture of copper bolts, iron nails, styrofoam, packaging balls and sugar? |
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Answer» Answer: using a magnet Explanation: copper BOLTS cannot be magnetized iron nails can be magnetized Styrofoam, PACKAGING balls can be REMOVED by HANDPICKING method at LAST sugar will be remained |
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| 3605. |
Ch3 co c2 h5 iupac name |
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Answer» Answer: 2-ButanonePLS MARK as BRAINLIEST |
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| 3606. |
Electronic configurations |
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Answer» ELECTRONIC CONFEGURATION |
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| 3607. |
(3) [kr] 40 550The potential energy for He* ion and kinetic energyfor Li-2 respectively can be given byin k3e² k3e²кзе? ке?(1)28(2) - 25k2e? k3e?(3)T2(4) + k2e² _k3e²2r |
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Answer» 3 is CORRECT answer...... thanks ........... okkkkkk..... no problem.......... |
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| 3608. |
Do anyone watch kumkum bhagya |
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| 3609. |
Ii) a) When an aqueous solution of potassium chloride is added to an aqueous solution ofsilver nitrate, a white precipitate is formed. Give the chemical equation of thisreaction. |
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Answer» here Ag cl FORMED white precipetate |
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| 3610. |
19. A solid AB has NaCl structure. if radius of thecation A'is 120 pm, what is the maximum valueof the radius of the anion ?(a) 290 pm(b) 310 pm(e) 534 pm(d) 164 pm |
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Answer» Answer: 290 pm Explanation: for NACL crystal radius of cation/radius of anion=0.414 rA+/rB- =0.414 rB- = rA+/0.414 =120/0.414 = 290 PPM |
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| 3611. |
Sabhitha stored tomato pickle in a copper container guess what should be the consequences |
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Answer» the pickle contain some kind of ACID so,STORING pickle in copper (or) any metallic container would LEAD to reaction of acid present in it against the copper container the it will be harmful to utilize |
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| 3612. |
Arrange the three isomers of alkane with molecular formula C5H12 in increasing order of the boiling point |
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Answer» Answer: L CAME with the MOLECULAR FORMULA ch12 is INCREASING in the order of the boiling point is at the RATE of in the Google answer was given |
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| 3613. |
Sodium carbonate and sodium hydrogen carbonate are given to you in powderform. Both are white in colour. How do you identify them by a chemical test? |
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Answer» Answer: we can identify by using METHYL ORANGE INDICATOR of phenophthylene indicator. Hope it helps...plzz mark me as BRAINLIEST. |
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| 3614. |
45. Which of the following has zero electron density inxy plane?1) d₂22) d x2-y23) Pz4)dxy |
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Answer» he said he was in ENGLISH for your job but ma'am is RIGHT here to you ALSO said you a is the answer . . . |
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| 3615. |
Kennedy filled a 600 mL gas tank with oxygen at 27 degree celcus. The pressure of the gas is 202600 Pa. Calculate the amount of oxygen gas uses: |
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Answer» OK ok fgfytwyt555555555555558t5xy9d56og6xoxox fgfytwyt555555555555558t5xy9d56og6xoxox xgo5xto5xogzto5gzo5food otz5ofztoz5fzo5zfo5ztokfz5fzk545 |
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| 3616. |
What is meant by lattice? |
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Answer» A structure that is made of long thin pieces of wood or metal that cross over each other with SPACES shaped like a diamond between them, used as a fence or a support for climbing PLANTS; any structure or pattern like this |
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| 3617. |
4) Complete the following paragraph about elements and compounds:Elements are simple_______which are made of the same type of__________.They cannot be_________down chemically. Most elements are_________. They are________in appearance and are good__________of heat and_________are substances which are made from one or more__________chemically.All the elements are arranged in the _________ in the order of the increasing________. |
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Answer» atoms combined solid hard conductors various periodic table size |
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| 3618. |
Nitrosobenzene to what is produced |
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| 3619. |
How to find gold number |
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Answer» by LOOKING at the book Explanation: MARK this as the BRAINLIEST |
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| 3620. |
Which among them is an example for covalent bond a. single bond b.double bond C .both d. none |
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Answer» Answer: |
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| 3621. |
Amino acid is precursor for amediator of allergies and inflammation |
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Answer» Answer: when Nitrogen dioxide nitrogen oxide Sulphur Dioxide sulphur TRIOXIDE produce from unburnt combustion of fossil fuel and smelting by non ferrous METAL to FORM nitric acid sulphurous acid sulphuric acid and FALL down in the form of rain is called acid rain it destroy ELECTRICAL equipment wild plants etc. mark my answer as brain list |
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| 3622. |
Which one of the property of matter is not quantities in nature |
Answer» The PROPERTIES of MATTERwhich are not quantitativein NATURE are -◾ Odour◾ Colour◾ Taste◾ Malleability◾ Ductility◾ Lustur◾ Etchope it HELPS... |
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| 3623. |
Give the product of sodium ethanoate is heated with soda lime |
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| 3624. |
Name the bond present in the following molecules :(a) H2 (b) N2 (c) CH4 (d) NH3 (e) O2 (f) CCl4 |
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Answer»
1.hydrogen(SPECIAL type of dipole-dipole attraction between molecules, not a COVALENT bond ) 2. dinitrogen(covalent TRIPLE bond) 3.Methane(covalent single bond) 4.Azane (single covalent) 5.Oxygen(double covalent) 6.Tetrachloromethane(single covalent bond) Hope it will help mark as brainlist☺☺. I need only one brainlist answer |
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| 3625. |
What are the chemicals can attract and obsorb Hydro Carbon from a rice grain ? |
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Answer» Answer: |
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| 3626. |
The energy of an electron in the second Bohr orbitof H-atom is - E. The energy of the electron in theBohr's first orbit is1) -E/42) -4E3) 4 E4) - 2 E. |
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Answer» Answer: 1 . -e/4. HOPE you UNDERSTAND this was it RIGHT?? |
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| 3627. |
The volume of50g of a substance is 20c cube if the density of water is 1 g\c cube Will the substance float or sink |
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Answer» The OBJECT will sink Explanation: .......... |
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| 3629. |
Why does carbon not form c4+ or c4 ions? |
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| 3630. |
Give reason for the following statements on periodic trends in modern periodic table ofelements.a) Along the period, from left to right, the atomic radius values of the elementsdecrease whereas along the groups, from the top to bottom, the atomic radiusincreaseb) The electron affinity values increase along the period from left to right and decreasedown the group.c) The ionization energy values increase along the period from left to right anddecrease down the group. |
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Answer» Answer: a)at.radius decreases along the period BCZ the effective nuclear charge increases due to which ATOM contracts n down the group at.radius increases as shell no. increases due to which screening effect increases . b)electron AFFINITY has the same reason as MENTIONED above. c)same as above. |
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| 3631. |
84.For a chemical reaction A - B, the rate of 84reaction doubles when the conc. of A is increased8 times. The order of reaction wrt. A is :-(1) 3(2) 1/3NI(3) 1(4) Zero |
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Answer» 4 is correct answer...... I hope HELP you...... OKKKK....... no problem YAR......... okkkkkkkkkkk....... |
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| 3632. |
1. Process in which a gas changes to liguld by going out heat is known as a__________2. The slow eating away of metals is known as __________3 Reaction between quicklime and water is an..______4. Stirring________ the rate of dissolution 5 _______takes place at all temperatures,I |
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Answer» Answer: 1.condensation 2.errotion 3.calcium hydroxide 5.evapouration 4.increase |
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| 3633. |
Write an activity to show redox reaction |
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Answer» Answer: Redox Reaction EXAMPLEIn a redox reaction, the REACTANT that loses ELECTRONS (is oxidized) causes a reduction and is called a reducing agent. In the example above, zinc metal is the reducing agent; it loses two electrons (is oxidized) and BECOMES Zn2+ ION.
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| 3634. |
The volume occupied by 4.4g of Co2 at STD is |
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Answer» Hey FOLK, Molecular mass of CO2 = 44 g ie, 44 g CO2 = 22.4 l so, 4.4 CO2 ( 44 * 0.1 =4.4 ) = 22.4 * 0.1 =2.24 L |
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| 3635. |
C) Identify the Lewis Acids from the followingsAlCl3 , NH3, BF3 and CH4 |
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| 3636. |
Consider ammonia and water molecules show their symmetry operation and symmetry elements |
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Answer» Answer: Molecular symmetry in chemistry describes the symmetry present in molecules and the CLASSIFICATION of molecules according to their symmetry. Molecular symmetry is a FUNDAMENTAL CONCEPT in chemistry, as it can be used to predict or explain MANY of a molecule's chemical properties, such as its dipole moment and its allowed spectroscopic TRANSITIONS. Many university level textbooks on physical chemistry, quantum chemistry, and inorganic chemistry devote a chapter to symmetry. |
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| 3637. |
How does the equation G=nFEexplain that an electrical potential is an extensive propety |
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Answer» Extension PROPERTIES are values associated with the extension. They are quite similar to regular data properties, wherein you map a key of TYPE string with a value string. ... These properties should be created and updated during extension INSTALLATION and used in the extension CODE. |
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| 3638. |
Explain the hybridization involved in pcl5 molecule |
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Answer» HIIII....this is your answer |
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| 3639. |
Application of gibbs Or Gibbs laws |
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Answer»
Gibbs and gibbs LAWS APPLICATIONHope it would be helpfulThe Gibbs free energy is ONE of the most important thermodynamic functions for the characterization of a system. It is a factor in determining outcomes such as the voltage of an ELECTROCHEMICAL cell, and the equilibrium constant for a reversible reaction. |
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| 3640. |
Activity to show redox reaction |
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Answer» Answer: Redox REACTION ExampleIn a redox reaction, the reactant that loses electrons (is oxidized) CAUSES a REDUCTION and is called a reducing agent. In the example above, zinc METAL is the reducing agent; it loses two electrons (is oxidized) and BECOMES Zn2+ ion. |
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| 3641. |
Explain coordination number. |
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Answer» Explanation: coordination number CALLED LIGANCY , the number of atoms ions are MOLECULES that a central ATOM or ion holds as the nearest nighours in a COMPLEX or coordination compound or in a crystal |
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| 3642. |
I have not studied anything in class 11 chem ncert but i don't want o mess class 12 chem which chapters of class 11 should in study in summer vacation? |
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Answer» Explanation: fighter aircraft, often REFERRED to simply as a fighter, is a MILITARY fixed-wing aircraft designed PRIMARILY for air-to-air combat against other aircraft. The key performance features of a fighter include not only its firepower but also its HIGH speed........... OKKKKK....... thanks....... |
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| 3643. |
Distinguished between joule thompson and adiabetic process |
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Answer» Answer: In the Joule Thompson experiment,there is major viscous dissipation of mechanical energy (in this case pressure )to internal energy occurring within the pores of the plug .But,for FLOW of an ideal GAS through a POROUS plug,the adiabic COOLING is exactly offset by the viscous heating.... |
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| 3644. |
Chemical equation for ethanol n ethanoic acid |
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Answer» CH3CH2OH = ethanol ch3cooh = ethanoin acid Explanation: |
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| 3645. |
Which chapter should I first cover in chemistry class 10 line wise according to book or different chapter as I am moving to 10th so pls ans |
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Answer» Explanation: If it is possible PLS go order wise because the first few chapters are the base for the others and ALSO if you will directly start with the hard chapters you would be pressurized and thus you will GET NERVOUS. So start it order wise. Saying from my experience. |
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| 3646. |
Corrosion, wearing away due tochemical reactions, mainly oxidation (see oxidation-reduction, oxide). It occurs whenever a gas or liquid chemically attacks an exposed surface, often a metal, and is accelerated by warm temperatures and byacidsandsalts. Normally, corrosion products (e.g., rust, patina) stay on the surface and protect it. Removing these deposits re-expose the surface, and corrosion continues. Some materials resist corrosion naturally; others can be treated to protect them (e.g., by coating, painting,galvanizing, or anodizing).1.What special name is given to the corrosion of iron? ____________________________________________________________________________________ 2.What type of chemical reaction is involved in the corrosion of iron? ____________________________________________________________________________________3. Name any three structures which are gradually damaged by the corrosion of iron and steel?____________________________________________________________________________________ 4.Write a chemical equation to show the process of corrosion of iron. |
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Answer» Answer: 1. Corrosion of iron is also called as Rusting of iron 2. In the process of corrosion of iron, a REDOX REACTION TAKES place. Here, hydrogen and oxygen are ADDED simultaneously. 3. (i) The iron pillars are corroded. (ii) Many iron and steel based electrical APPLIANCES are damaged. (iii) Iron gates, iron nails are corroded and are eaten by rust 4. 4Fe+3O₂+nH₂O→2Fe₂O₃.nH₂O is rust |
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| 3647. |
Salt and copper are hetrogeneous or homogeneous |
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Answer» Homogeneous Pls MARK as brainliest Explanation: |
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| 3648. |
If the rate constant of a reaction is 2×10^8 then find rate of reaction |
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Answer» Explanation: Second order reactions can be defined as chemical reactions wherein the sum of the EXPONENTS in the CORRESPONDING rate law of the chemical reaction is equal to TWO. The rate of such a reaction can be written either as r = k[A]2 , or as r = k[A][B]. |
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| 3649. |
What is the chemical equation for soap? |
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Answer» Answer: SOAPS are denoted by the general formula RCOO-Na+, where R is any long chain alkyl group consisting 12 to 18 carbon atoms. Some common examples of fatty acids that are used in soaps are stearic acid having CHEMICAL formula C17H35COOH, PALMITIC acid having chemical formula C15H31COOH. |
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