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InterviewSolution
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.
| 51551. |
Fill in the blanks : 1) ______ are the building blocks of every matter. 2) A _______ is made of same or different kinds of atoms.3) The gas can be converted into liquid state by increasing the _______.4) The freezing point of water is _____.5) Condensation of water is a ______ change.6) _______ is used to separate solid-solid complex mixtures. 7) Elements are represented by their ______.8) Pure water is a ______.9) Mixture is an ______ substance. 10) The constituents of a compound are present in _____ proportion. |
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| 51552. |
कॉपर ऑक्साईड CuO रेनुसुत्रावरून घटक मूलद्रव्यांचे अपेक्षित वजनी प्रमाण काढा |
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| 51553. |
Si and Ge are1) metals2)non-metals3) metalloids4)nobel gases |
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Answer» Explanation:me SYMBOLS Metals/Non-metals/Noble gases/Metalloids (a) Potassium K Metal (b) Carbon C Non-metal (c) Oxygen O Non-metal (d) Mercury Hg Metal (e) FLUORINE F Non-metal (f) Neon Ne Noble GAS (g) Sulphur S Non-metal (h) Zinc Zn Metal (i) Boron b Metalloid (j) Copper CU Metal (k) Calcium Ca Metal (l) Xenon Xe Noble Gas (m) Arsenic As Metalloid (n) Mercury Hg Metal (o) Chlorine Cl Non-metal (p) Silicon Si Metalloid |
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| 51554. |
P-block elements are1)metals2)non-metala3)metalloids4)all the above |
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| 51555. |
Which of the following does not make in sense ? (a) 2s (b) 3f (c) 2p (d) 1s |
| Answer» 2P doesn't MAKE SENTENCE. | |
| 51556. |
লঘু অ্যাসিড থেকে হাইড্রোজেন গ্যাস মুক্ত করার ক্রমহ্রাসমান প্রবণতা অনুসারে কয়েকটি ধাতুকে সাজিয়ে দেওয়া হলাে – Na, Fe, (H), Cu, Au । এই তথ্য থেকে সবচেয়ে তড়িৎধনাত্মক ধাতুটিকে চিহ্নিত করে। |
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Answer» হাইড্রোজেন সালফাইড একটি রাসায়নিক যৌগ যার রাসায়নিক সংকেত H2S। এটি বর্ণহীন, পঁচা ডিমের গন্ধযুক্ত গ্যাস, এটা বাতাসের থেকে ভারী, বিষাক্ত, ক্ষয়কারক, দাহ্য এবং বিষ্ফোরক পদার্থ। |
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| 51557. |
Please answer this Give right answer otherwise you will be reported |
| Answer» 1) YES2) FALSE3) FALSE4) Yes5) FALSE | |
| 51558. |
The number of electrons in a neutral atom of an element is equal to it’s: * a) Atomic weight b) Atomic number c) Equivalent weight d) Electron affinity |
| Answer» B)ATOMIC NUMBER | |
| 51559. |
Q.3. State true or false. (1X 5= 5marks) 1) Evaporation is the surface phenomenon.2) RER is not a site of protein synthesis.3) Membrane -bound cell organelles are present in eukaryotes.4) S. I unit of velocity is m/s.5) When motion of the body decreases with time, it is called de-accelerated motion. |
| Answer» 1) TRUE2) FALSE3) TRUE4) True5)TRUE | |
| 51561. |
Which of the following does not make sense? |
| Answer» EXPLANATION:does who are NONSENSE | |
| 51562. |
What is substance which helps in evaporating and burning glass |
| Answer» SODIUM HYDROXIDE NAOH | |
| 51563. |
Plese tell me the answer I need right answers otherwise I will report you |
| Answer» 1) Atom2) Matter3) COMPOUND 4) intermolecular5) LIQUIDS | |
| 51564. |
Who is the father of chemistry ? |
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Answer» VERIFIED ANSWER Explanation:Antoine-Laurent DE LAVOISIER, also Antoine Lavoisier after the French REVOLUTION, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a LARGE influence on both the history of chemistry and the history of biology. |
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| 51565. |
व्हाट इज बायो केमिस्ट्री |
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Answer» istry is the branch of science that explores the CHEMICAL PROCESSES WITHIN and related to living organisms. It is a laboratory based science that brings TOGETHER biology and chemistry. By using chemical knowledge and techniques, biochemists can UNDERSTAND and solve biological problems.Hᴏᴘᴇ ɪᴛs ʜᴇʟᴘs ʏᴏᴜ ❤ |
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| 51566. |
17. Removal of hydrogen from a compound is an example of reduction . True False |
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Answer» This OCCURS when the oxidation NUMBER of an atom increases. The removal of oxygen from any substance is known as REDUCTION. ... Thus, the removal of hydrogen is known as oxidation and not reduction. Therefore, option (B) is correct. |
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| 51567. |
Balanced equation of aniline into chlorobenzene |
| Answer» EXPLANATION:ANSER is in the below FILE | |
| 51568. |
Which of the following has a +ve charge? * a) Protonb) Neutronc) Aniond) Electron |
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Answer» The particles that exist inside the nucleus are PROTONS and NEUTRONS but only proton has the positive CHARGE equal to 1. |
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| 51569. |
Write an activity to test whether sulphur solution is acidic or basic in nature. |
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Answer» After all the sulphur has burnt, remove the combustion spoon from the jar and put some WATER in the gas jar, COVER it with a lid and shake it to dissolve sulphur dioxide gas. We will divide this solution in TWO parts and test it with blue litmus PAPER and red litmus paperExplanation:HOPE IT'S HELPFUL¡!!!!! |
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| 51570. |
Q2. Fill in the blanks :- (1X 5=5 marks) 1) As the temperature of system increases, it’s volume ___________2) __________ controls all the activities of cell.3) Force of attraction in liquid is _________ than in solid.4) Displacement is _______ quantity.5) If v < u, then acceleration will be________ |
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Answer» 1) volume increases ( due to expansion)2) NUCLEUS 3) LESS than (because intermolecular attraction forces between solids are HIGHER than other state)4) vector (because it has a magnitude and a particular DIRECTION)5) decrease |
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| 51571. |
Which of the following statements about the electron is incorrect? |
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| 51572. |
i) State photoelectric effect. ii) In photoelectric effect, at what frequency the electron will be ejected with certain kinetic energy (γ0 = threshold frequency) iii) In the photo-electron emission why the number of electrons emitted increases with increase in intensity of radiation? |
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Answer» tion:Ans (i) Photoelectric effect is the phenomenon of emission of electrons from the surface of a metal when light photons (electromagnetic radiation) of a certain FREQUENCY strikes the metal surface. ... Number of photoelectrons emitted from the metal surface per second is directly PROPORTIONAL to intensity of incident light.Ans (ii) In the photoelectric effect, electrons are ejected by a metal PLATE when hit by photons of electromagnetic radiation. ... The shorter the wavelength (the higher the frequency), the more the energy of the photon.Ans (iii) If the photon energy is too low, the electron is unable to escape the material. Increasing the intensity of the light increases the number of photons in the beam of light and thus increases the number of electrons EXCITED but does not INCREASE the energy that each electron possesses. |
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| 51573. |
What is formula of plaster of paris |
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Answer» (CASO4) H2OExplanation: |
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| 51574. |
What are the various in which a chemical reaction can be made more informative. |
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Answer» (a) The various WAYS in which a chemical EQUATION can be made more INFORMATIVE are : (i) By indicating the physical states of the reactants and products. Example: Gaseous state is indicated by the symbol (g). (ii) By indicating the heat changes taking PLACE in the reaction. |
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| 51575. |
The Aufbau principle states that…….? * a) Only two electrons can occupy an orbitalb) Electrons enter the lowest available energy levelc) Electrons remain unpaired if possibled) Orbitals are regions in space where one is likely to find an electron |
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Answer» b)Explanation:The Aufbau principle states that the electrons occupy the lowest available ENERGY levels. And the orbitals are ARRANGED in increasing order of their energy as 1S 2s 2p 3s 3p 4S 3d . . . |
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| 51576. |
The Heisenberg Principal states that |
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Answer» At the foundation of quantum mechanics is the Heisenberg uncertainty principle. Simply put, the principle states that there is a fundamental LIMIT to what one can KNOW about a quantum system. For EXAMPLE, the more precisely one knows a particle's position, the less one can know about its MOMENTUM, and vice VERSA. |
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| 51577. |
Mod¯\_(ツ)_/¯Find the approximate value of √0.037 using differential approxmations? |
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Answer» In computing, the modulo OPERATION returns the remainder or SIGNED remainder of a division, after one number is divided by another. Given TWO positive numbers a and N, a modulo n is the remainder of the Euclidean division of a by n, where a is the dividend and n is the DIVISOR. |
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| 51578. |
1. 10 O inches 2.34 cm 1 meter X Х I inch 100 cm Which of the following is/are true about the following unit conversion shown above? (a) 100 cm = 1 meter (b) The numerical answer is 0.254 cm. (c) All the units cancel out except for meters. (d) All of the above are correct. The method used to converts units from one system to other? |
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Answer» colate, ALSO known as hot cocoa or drinking chocolate, is a heated DRINK consisting of shaved chocolate, MELTED chocolate or cocoa powder, heated milk or water, and usually a sweetener. Hot chocolate MAY be topped with whipped cream or marshmallows. |
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| 51579. |
Burning does not obey the law of conservation of mass. true false |
| Answer» TRUE .The BURNING does not OBEY the MASS the mass will be DIFFERENT when burning . | |
| 51580. |
Is -3.6evanenergyCalcolate theofangularexcited H-atomemomentum |
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Answer» Explanation:The formula for ANGULAR momentum(L) is nh/2π in Joules. And if you wanna convert it into EV. MULTIPLY it by 1.6 × 10^-31.. |
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| 51581. |
What do you mean by a pure substance? What are its characteristics? Give examples |
| Answer» PLEASE TELL me which CLASS so that i can GIVE you the ANSWER | |
| 51582. |
15 which atomic orbital is spherical in shape ? ;3P, 3d, 4A |
| Answer» AL. All s ORBITALS are spherical in SHAPE and have spherical symmetry. This means wavefunction will DEPEND only on the distance from the nucleus and not on the direction. | |
| 51584. |
Assertion : An alloy is considered as a mixture. 1 Reason : It shows the properties of its constituents |
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Answer» because ALLOY has MADE with TWO METALS and can separate by PHYSICAL methods |
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| 51585. |
Atomic mass of oxygen is 16u. What does it indicate |
| Answer» ATOMIC mass of an element is the RELATIVE mass of its ATOM as compared with the mass of a carbon-12 atom taken as 12 units. Hence, atomic mass of OXYGEN is 16 U means that one atom of oxygen is 16 times heavier than 1/12 of a carbon-12 atom. | |
| 51586. |
What is ionization energy? ..Myself - Mohammad Kaif class 10th Your intro friend I am drawing from my childhood:)what about you , do you like drawing |
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Answer» tion:In physics and chemistry,ionization energy or ionisation energy is the minimum AMOUNT of energy required to remove the most LOOSELY bound electron of an isolated NEUTRAL GASEOUS atom or MOLECULE. |
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| 51587. |
Which among the following can exist in vapour statel |
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Answer» ter EXIST in a vapour STATE. Boiling of WATER causes RISE of vapour it means that water can exist in vapour on heating. |
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| 51588. |
The common molecular formula for both cyclopropane propane a)c3h6b) c3h8c)c3h4d)c2h6 |
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Answer» the FORMULA for ALKANE is CₙH₂ₙ ₊ ₂ and Cyclo-Alkane is CₙH₂ₙ. |
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| 51589. |
Pls Answer Correctly |
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Answer» The WIRE 'A' will OFFER MINIMUM resistance, as the it has greater area of cross-section than wire 'B'. |
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| 51590. |
A microscope using suitable photons is employed to locate an electron in an atom within a distance of 0.1 Å. What is the uncertainty involved in the measurement of its velocity? |
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| 51591. |
Which of the following statements about the electron is incorrect? * |
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Answer» Where is your STATEMENT |
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| 51592. |
(iv) Which process among the following cannot be considered under the application of evaporation? * (a) Keeping a wet bandage over a person's forehead who is suffering from fever (b) Keeping water in earthen pots to keep the water cool. (c) Drying of clothes on sunny days. (d) Seeing water droplets on a water bottle which has been taken out of the refrigerator |
| Answer» C)DRYING OF CLOTHES ON SUNNY DAYS | |
| 51593. |
When a copper is exposed to Air for a long time it acquires a green coat because it reacts with a) sulphur b) nitrogenc) moist oxygend) moist carbon dioxide. |
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Answer» when a copper is exposed to AIR for a long TIME it acquires a green coat because it REACTS with c)MOIST oxygen.MARK ME AS BRAINLIEST THIS IS THE CORRECT ANSWER :-) |
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| 51594. |
Q.3: Arrange the following elements as per the guidelines in brackets: [3]1. Na, Cl, Mg, P[in decreasing order of atomic size]2. C, Li, F, N[in increasing order of electronegativity]3. Cl, Al, Na, S[in decreasing order of ionisation potential] |
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Answer» tion:1. Na, Mg, P, Cl 2. LI, C, N, F 3. Na, Al, S, Cl 4. F, O, C, Li 5. He, Ne, Ar |
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| 51595. |
The de-Broglie wavelength of a ball of mass 10g moving with a velocity of 10ms⁻¹is: [h=6.626×10⁻³⁴Js |
| Answer» DEAR sir please find the attached resume for a good day to me join date and join the CONSUMER is the AFRICAN National and join the African UNION commission rate for the foremost I'd no and I am not a and the African continent the consumer electronics show that you can see each .mark as BRAINLIST | |
| 51596. |
Q6. Which of the followingstatements about the electron isincorrect? |
| Answer» ELECTRONS are NEGATIVELY CHARGE PARTICLES | |
| 51597. |
Aarnika lives in a coastal area. She spoke to her friend who lives in a dessert area regarding rusting of iron articles in her home. She was surprised to know from her friend that she was not facing the similar situation at her place. State the reason why Aarnika was undergoing this problem? |
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Answer» ry is a branch of natural SCIENCE that deals PRINCIPALLY with the PROPERTIES of substances, the changes they undergo, and the natural laws that DESCRIBE these changes. |
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| 51598. |
Write the electronic configuration of a) sodium with atomic number 11 b) sulphur with atomic number 16 and state whether it belongs to metal or non metal with Justification |
| Answer» SODIUM (Z=11)K=2L=8M=1Sulphur (Z=16)K=2L=8M=6Explanation:Sodium is a metal as its valence SHELL has 1 ATOM and Sulphur is a non-metal as its valence shell as 6 ATOMS. | |
| 51599. |
A bullet is shot from a rifle with a speed of 720m/s. What time is required for the bullet to strike its target which is 3240m away? |
| Answer» 4. 5 secondsExplanation:for a SECOND ⇒ 720 m for 3240 m ⇒ 1/720 × 3240 = 4. 5 SECONDS | |
| 51600. |
2.Question:. Three acidic solutions A,B,C have pH=1,6,14 respectively. Which solution has the highest number of Hydrogen ions? |
| Answer» CEXPLANATION:It has the HIGHEST ATOMIC NUMBER. | |