This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is displacement reaction |
| Answer» DISPLACMENT Reaction :- The reaction in which more reactive element DISPLACE with less reactive element.There are different types of reaction such as :- Combination reactionDouble Displacement PRECIPATE Reaction Chemical Reaction :- The reaction in which the substance change to FORM another NEW substance with different properties. Such as change in temperature, odour , colour etc.Example:- Mg + CuSO4 -> MgSO4 + Cu | |
| 2. |
I) Write the electron-dot structures for sodium (11), oxygen (8), chlorine (17) and magnesium (12). Show the formation of Na20 and MgO by the transfer of electrons. (ii) Name the ions present in these compounds. CBSE Class X Science LA (5 Marks) |
| Answer» CL MG 2.8.1 2.6 2.8.7 2.8.2 | |
| 3. |
Compare the power used in the 2 CI resistor in each of the following circuits : (a) A 6 V battery in series with 1 f2 and 2 cd resistors. (b) A 4 V battery in parallel with 12 12 and 2 CI resistors. CBSE Class X Science SA 2 (3 Marks) |
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Answer» ith 6 V Battery is 8 WExplanation:(i) Given, POTENTIAL Difference, V = 6 VSince resistances are connected in seriesHence, Equivalent Resistance of the circuit, R = 1 + 2 = 3 According to Ohm's LawV = IRor I = POWER used in the 2 resistancePower = = 8 W(ii) Given, Potential Difference, V = 4 VSince 12 \Omega & 2 resistances are connected in parallelThe voltage across each COMPONENT of parallel circuit remains sameHence, the voltage across 2 resistor will be 4 V.Power consumed by resistor is given by = 8 W |
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| 4. |
What is fluids and example |
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Answer» Water.Air.Blood.Mercury.Honey.Gasoline.Any other GAS or LIQUID |
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| 5. |
What is paedogenesis... |
| Answer» PAEDOGENESIS is the PROCESS of formation of SOIL from upper Rocky crust of the EARTH. | |
| 6. |
Two wires made of copper and nichrome have equal lengths and equal resistances. Which is thicker? The resistivity of nichrome is greater than resistivity of copper. Why are alloys commonly used in electrical heating devices such as electric toasters and electric iron ? CBSE Class X Science SA 2 (3 Marks) |
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Answer» Nichrome has more RESISTIVITY than COPPER. HENCE for equal length and resistance it has to to be thicker since resistance is inversely PROPORTIONAL to the diameter of the wire. Nichrome and copper WIRES of the same length and radius are connected in a series. A current, I, is passed through them.i think this is the answer |
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| 7. |
If two resistors of value R are connected in series and then in parallel, what is the difference in equivalent resistance in both cases ? CBSE Class X Science SA 1 ( 2 marks) |
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Answer» If two RESISTORS of VALUE R are connected in SERIES and then in PARALLEL, what is the difference between equivalent resistance in both cases? In series: R + R = 2R. ... Resistors in parallel are RT = 1/(1/R + 1/R) = 1/2R.Oct 3, 2017Explanation: |
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| 8. |
A compound 'X' is a constituent of baldng power. It is used as an antacid When 'X' is heated it gives out a gas "V which when passed through lime water turns it milky and a salt 'Z' is formed which is the main constituent of washing power. Identify X, Y and Z Write balanced chemical equations for the reactions involved CBSE Class X Science SA 2 (3 Marks) |
| Answer» X NaHCO3Y CO2Z NA2CO3Explanation:These are X Y and Z | |
| 9. |
(i) A wire of resistivity p is stretched to double it's length, what is it's new resistivity. Give reason for your answer. (ii) Draw a schematic diagram of a circuit consisting of a battery of three cells of 2V each, a 511 resistor, 80 resistor and 120 resistor and a plug key all connected in series. (iii) Two wires, one of copper and other of manganese have equal lengths and equal resistances. Which is thicker ? (Given that resistivity of manganese is lower than that of copper.) CBSE Class X Science SA 2 (3 Marks) |
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Answer» tion:1. half of the RESTIVITY before DOUBLING it because length of the wire is inversly proportional to resistance2. in FIG3. manganese |
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| 10. |
Study the following circuit and answer the questions that follow : (a) State the type of combination of the two resistors in the circuit. (b) How much current is flowing through : (i) 10 ohm resistor (ii) 15 ohm resistor. (c) What is the ammeter reading ? (d) Define SI unit of the current CBSE Class X Science LA (5 Marks) |
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Answer» e of combination:The image given in the question is attached below.The resistors given in the circuit is parallel combination. So, this is a parallel resistor.When the resistors are connected in parallel combination, then the reciprocal of equivalent resistor is equal to sum of reciprocal of INDIVIDUAL resistors.(b) CURRENT flowing through the circuit:(i) 10 ohm resistor:On substituting the values, we get,(ii) 15 ohm resistor:On substituting the values, we get,(c) Reading in ammeter:The resistors are in parallel, so, the current flowing through the resistors are DIFFERENT. So, we need to find the sum of current flowing through the individual resistors.On substituting the values, we get,(d) SI unit of current:Current is measured with the unit Ampere. |
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| 11. |
(i) Explain why is hydrochloric acid a strong acid and acetic add, a weak acid. How can it be verified ? OE Explain why aqueous solution of an add conducts electricity ? (lii) You have four solutions A, B, C and D. The pH of solution A is 6, B is 9, C is 12 and D is 7, (a) Identify the most acidic and most basic solutions. (b) Arrange the above four solutions in the increasing order NH" ion concentration. (c) State the change in colour of pH paper on dipping in solution C and D. CBSE Class X Science LA (5 Marks) |
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Answer» Because HYDROCHLORIC acid is REACTIVE than acetic acid ELECTRICITY PASS through hydrochloric acid |
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| 12. |
What is rain gauge... |
| Answer» RAIN gauge is an INSTRUMENT for measuring the AMOUNT of RAINFALL. | |
| 13. |
What is hyperbolic what r uses |
| Answer» HYPERBOLIC. ... An example of SOMETHING that would be described as hyperbolic is a reaction by a PERSON that is COMPLETELY out-of-proportion to the events occurring | |
| 14. |
What is air........ |
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Answer» Air is a GASEOUS MIXTURE that offers over the Earth and is BREATHED by all land plants and animals.Explanation:. |
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| 15. |
Why is life on Mars and Venus planets not possible |
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Answer» it is so because on these PLANETS carbon dioxide forms about 95-97 PERCENT of the ATMOSPHERE. |
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| 16. |
Who is given the name of atom? |
| Answer» RUTHERFORD .............. | |
| 17. |
What is smog............ |
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Answer» Smog is a opaque DARK brown aur greyish mist occurring in cold weather reducing visibility and affecting LIVING organisms. |
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| 18. |
(a) What happens chemically when quick lime is added to water ? (b) Balance the following chemical equation Mn02 + HC1 —> MnC12+ C12 + Hp (c) What is decomposition reaction ? Explain it with suitable example. CBSE Class X Science LA (5 Marks) |
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Answer» a vigorous reaction TAKES PLACE when QUICKLIME is added to water the temperature of beaker INCREASES CaO+H2O=Ca(OH)2b)MnO2+4HCl=MnCl2+2H2O +Cl2c)reaction in which one COMPONENT is break down into two or more.ex:- 2H2O=2H2+O22FeSO4:-Fe2O3+SO2+SO3 |
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| 19. |
With the help of a schematic flow chart, show the break-down of glucose in a cell to provide energy : (i) in the presence of oxygen (ill in the absence of oxygen (iii) when there is lack of oxygen. CBSE Class X Science SA 2 (3 Marks) |
| Answer» EXPLANATION:Here is UR ANSWER | |
| 20. |
State the observation made by Oersted on the basis of his experiment with current-carrying conductors. CBSE Class X Science VSA (1 Mark) |
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Answer» tion:The experiment of Oersted showed that there is a connection between electricity and magnetism. He noted that a magnetic field is produced by a present carrying wire. If you hold a compass needle next to a present carrying wire, the deflection would appear.He OBSERVED that a conductor carrying a CURRENT can deflect a magnetic compass which is placed nearby. On this basis it was concluded that the current carrying creates a magnetic field. On the INSERTION of a soft iron in a current carrying SOLENOID, the magnetic field because of the solenoid INCREASES. |
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| 21. |
Sanjay wanted to teat the reactivity of zinc. He put zinc granules in four different solutions as shown below. He would observe that reaction takes place in— aM~.h rest.—l- Zn AA Zn zn zrr-tis (I) rI) (111) O'v) (A) (l) and (II) (B) PO and (III) OM and UV) (D) (10 and (IV) CBSE Class X Science VSA (1 Mark) |
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Answer» bro its better to see in GRADE up school APP or TOPPER app.....Explanation:sorry I don't know this answer is CLEARLY |
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| 22. |
(a) Draw human excretory system and label the following parts : (i) Left kidney (ii) Urethra (iii) Urinary bladder (iv) Vena cava. (b) State the purpose of forming urine. (c) Name any two substances which are selectively reabsorbed from the tubules of a nephron. CBSE Class X Science LA (5 Marks) |
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Answer» that it HELPS |
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| 23. |
When a current-carrying conductor is kept in a magnetic field, it experiences a force. List the factors on which the direction of this force depends. CBSE Class X Science SA 1 ( 2 marks) |
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Answer» ection of force experienced by a current carrying conductor placed in a magnetic FIELD depends on the direction of the current in the conductor and the direction of the applied magnetic field. This is given by Fleming's LEFT hand rule. Fleming’s left hand rule -- If the forefinger, middle finger and THUMB of the left hand are stretched such that they are at right angles to each other, then:The forefinger gives the direction of the magnetic field. • The middle finger points in the direction of the current. • The thumb gives the direction of the force ACTING on the current-carrying conductor placed in the external magnetic field. (b) The force experienced by a current carrying conductor is maximum when the current and magnetic field are at right angles to each other. (c) Since the proton beam is moving ALONG the magnetic field the force acting on the proton beam is zero.hope it helps... |
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| 24. |
Anyone help me im in great trouble |
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Answer» y what HAPPENED . |
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| 25. |
Define the term conoial period. |
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Answer» The colonial history of the United STATES covers the history of European COLONIZATION of America from the EARLY 16th century until the incorporation of the COLONIES into the United States of America. In the LATE 16th century, England, France, Spain, and the Netherlands launched major colonization programs in America |
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| 26. |
पौधा-घर प्रभाव का अपने शब्दों में वर्णन कीजिए। |
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Answer» with EXPLANATION:सूर्य से निकली अवरक्त विकिरण के कारण पृथ्वी के वायुमंडल के गर्म होने को पौधा-घर प्रभाव (ग्रीनहाउस प्रभाव) कहा जाता है। जब सूर्य की किरणें पृथ्वी की सतह पर पहुँचती हैं, तो उनमें से कुछ वापस परावर्तित हो जाती हैं और बाकी पौधा घर गैस (ग्रीनहाउस गैसों ) द्वारा अवशोषित हो जाती हैं, जिसमें जल वाष्प, कार्बन डाइऑक्साइड, मीथेन और ओज़ोन शामिल हैं। कार्बन डाइऑक्साइड एक पौधा घर गैस (ग्रीनहाउस) है। वायुमंडल में कार्बन डाइऑक्साइड की अधिक मात्रा सूर्य की विकिरण की आवश्यक मात्रा से अधिक अवशोषित होने के कारण वातावरण के औसत तापमान में वृद्धि का कारण बनती है। तापमान में वृद्धि के कारण ध्रुवीय बर्फ के आवरण पिघलने लगेंगे और समुद्र में जल स्तर में वृद्धि होगी। इससे तटीय इलाकों में रहने वाले लोगों के लिए खतरा पैदा हो सकता है। आशा है कि यह उत्तर आपकी अवश्य मदद करेगा।।।। इस पाठ से संबंधित कुछ और प्रश्न : जल में पोषकों के स्तर में वृद्धि किस प्रकार जल जीवों की उत्तरजीविता को प्रभावित करती है? brainly.in/question/11515339 निम्नलिखित में से कौन सी पौधा-घर गैस नहीं है? (क) कार्बन डाइऑक्साइड (ख) सलफर डाइऑकक््साइड (ग) मेथेन (घ) नाइट्रोजन brainly.in/question/11515326 |
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| 27. |
What is ODS ...... |
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Answer» an ARCHAIC EUPHEMISM for GOD, USED in EXCLAMATIONS. |
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| 28. |
Hi guys why Pythagoras was considered as god by greek people, |
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Answer» Because PYTHAGORAS samos was the ANCIENT GREEK philosopher PHILOSOPHERS are just like God. |
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| 29. |
Name the products formed when a metal carbonate reacts with an acid |
| Answer» METAL carbonate/hydrogencarbonate+acid =WATER (H2O)+CO2+Metal SALT. | |
| 30. |
What are greenhouse gases |
| Answer» GREENHOUSE gases are RELATIVELY active vessels which allow the solar RADIATION to first loan but REFLECT back LONG wave heat radiations (GHGs) | |
| 31. |
What is greenhouse effect |
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Answer» greenhouse effect is KEEPING and piriyavum by allowing the solar RADIATIONS to pass input preventing long WAVELENGTH heat waves to escape due to PRESENCE of relative REACTIVE gases and glass panes. |
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| 32. |
आपके द्वारा कक्षा में विश्व ऊष्णन के बारे में दिया जाने वाला संक्षिप्त भाषण लिखिए। |
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Answer» with EXPLANATION:विश्व ऊष्णन (GLOBAL WARMING) के बारे में दिया जाने वाला संक्षिप्त भाषण निम्न प्रकार से है : जब सूर्य की किरणें पृथ्वी की सतह पर पहुँचती हैं, तो उनमें से कुछ वापस परावर्तित हो जाती हैं और बाकी पौधा घर गैस (ग्रीनहाउस गैसों ) द्वारा अवशोषित हो जाती हैं, जिसमें जल वाष्प, कार्बन डाइऑक्साइड, मीथेन और ओज़ोन शामिल हैं। अवशोषित ऊर्जा पृथ्वी के तापमान को बनाए रखती है। वातावरण में ग्रीनहाउस गैसों की वृद्धि विश्व ऊष्णन (ग्लोबल वार्मिंग ) के लिए उत्तरदाई है, जो कि पृथ्वी के औसत तापमान में वृद्धि करती है। तापमान में वृद्धि के कारण ध्रुवीय बर्फ के आवरण पिघलने लगेंगे और समुद्र में जल स्तर में वृद्धि होगी। इससे तटीय इलाकों में रहने वाले लोगों के लिए खतरा पैदा हो सकता है। आशा है कि यह उत्तर आपकी अवश्य मदद करेगा।।।। इस पाठ से संबंधित कुछ और प्रश्न : ताजमहल की सुन्दरता पर संकट का वर्णन कीजिए। brainly.in/question/11515340 निम्नलिखित में से कौन सी पौधा-घर गैस नहीं है? (क) कार्बन डाइऑक्साइड (ख) सलफर डाइऑकक््साइड (ग) मेथेन (घ) नाइट्रोजन brainly.in/question/11515326 |
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| 34. |
3. Explain Newton's laws of motion with the help of one single example in daily life in short answer |
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Answer» s first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. SECOND law: In an INERTIAL frame of reference, the vector sum of the forces F on an OBJECT is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant Third law: When one body EXERTS a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.Hope it is HELPFUL plz mark me as brainlist |
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| 35. |
What happens when a piece of iron metal is placed in copper sulphate solution? Explain the reaction. |
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Answer» ✔When iron is placed in Copper SULPHATE SOLUTION, the iron is coated with a brown coloured substance "copper" and CuSo4 solutionchanges from BLUE to LIGHT GREEN. This is due to iron displacescopper as it is more reactive than copper |
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| 36. |
Mere sapno ka rajavhfhhgghhhbbgfjfdfjhurhjdadhv |
| Answer» TION:uehigeigeueuge8dh8dhdihdmere sapno kiraani Kab AAYEGI tuAyi Hus MASTANI Kab Aayegi TU | |
| 37. |
if velocity of particle is given by v is equal to alpha + beta x square then acceleration is equal to |
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Answer» a=dv/dt= d/dt ( α+βx²) (DIFFERENTIATION)=α+2βx (dx/dt) ∵ dx/dt=v, ∴ a= α+2βx . (α+βx²) = α+ 2αβx + 2β²x² |
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| 38. |
Separation of seeds from cottonball by combing |
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Answer» cotton FIBER separated from cotton seed,primary step is gining METHOD once cotton is VACCUM into TUBES that carry it a drier to scale back wet improve fiber quality. |
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| 39. |
उन अवस्थाओं की व्याख्या कीजिए जिनसे अम्ल वर्षा होती है। अम्ल वर्षा हमें कैसे प्रभावित करती है? |
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Answer» with EXPLANATION:उन अवस्थाओं की व्याख्या जिनसे अम्ल वर्षा होती है और अम्ल वर्षा हमें कैसे प्रभावित करती है निम्न प्रकार से है : कुछ प्रदूषक जैसे सल्फर डाइऑक्साइड, नाइट्रोजन डाइऑक्साइड वातावरण में मौजूद जल वाष्प के साथ अभिक्रिया करके सल्फ्यूरिक एसिड और नाइट्रिक एसिड बनाते हैं। यह अम्ल वर्षा जल में मिश्रित होता है और इस प्रकार यह वर्षा जल को अम्लीय बनता है। अम्ल वर्षा फसलों, जंगली पौधों, इस्पात रेल पटरियों, स्मारकों और बिजली के उपकरणों को बर्बाद कर देती है। यह आंखों, नाक और गले में जलन का कारण बनते है और हमारे जल निकायों पर प्रतिकूल प्रभाव डालते है।आशा है कि यह उत्तर आपकी अवश्य मदद करेगा।।।। इस पाठ से संबंधित कुछ और प्रश्न : आप अपने शहर की नगरपालिका के सदस्य हैं। ऐसे उपायों की सूची बनाइए जिससे नगर के सभी निवासियों को स्वच्छ जल की आपूर्ति सुनिश्चित हो सके। brainly.in/question/11752135 निम्नलिखित में से कौन सी पौधा-घर गैस नहीं है? (क) कार्बन डाइऑक्साइड (ख) सलफर डाइऑकक््साइड (ग) मेथेन (घ) नाइट्रोजन brainly.in/question/11515326 |
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| 40. |
Which other producers will you suggest to study Newton's law's of motion in the laboratady |
| Answer» EXPLANATION any ONE | |
| 41. |
Function of oxyhaemoglobin |
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Answer» Oxyhemoglobin: The oxygen-loaded form of hemoglobin, the PREDOMINANT protein in red BLOOD CELLS. Hemoglobin is a protein molecule that BINDS to oxygen. Hemoglobin forms an unstable, reversible bond with oxygen. In its oxygen-loaded form, it is called oxyhemoglobin and is bright red. |
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| 42. |
Question1: Explain the reason why some of the fibres are called synthetic. |
| Answer» TION:Some FIBRES are CALLED SYNTHETIC because they are man MADE fibres. | |
| 43. |
Explain 2 methods of traditional irrigation in briefly |
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Answer» There are MOAT. chain PUMP. Explanation:moat is pulley system |
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| 44. |
आप अपने शहर की नगरपालिका के सदस्य हैं। ऐसे उपायों की सूची बनाइए जिससे नगर के सभी निवासियों को स्वच्छ जल की आपूर्ति सुनिश्चित हो सके। |
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Answer» with EXPLANATION:आप अपने शहर की नगरपालिका के सदस्य हैं। ऐसे उपायों की सूची जिससे नगर के सभी निवासियों को स्वच्छ जल की आपूर्ति सुनिश्चित हो सके निम्न प्रकार से है : जल संसाधनों में छोड़े जाने से पहले औद्योगिक कचरे का उचित उपचार किया जाना चाहिए। सीवेज को भौतिक और रासायनिक विधि से उपचारित किया जाना चाहिए, क्योंकि इसे जल निकायों में डाला जाता है। उर्वरकों का उपयोग खेतों में कम किया जाना चाहिए क्योंकि बारिश के बाद खेतों से पानी जल निकायों में मिलता है । जल निकायों में कचरे को डंप करना, कपड़े धोना या नदियों के किनारे जानवरों को नहलाना और घरेलू सीवेज का निपटान जल निकायों में करने से पहले उपचारित करना चाहिए आशा है कि यह उत्तर आपकी अवश्य मदद करेगा।।।। इस पाठ से संबंधित कुछ और प्रश्न : शुद्ध वायु तथा प्रदूषित वायु में अंतर स्पष्ट कीजिए। brainly.in/question/11515337 निम्नलिखित में से कौन सी पौधा-घर गैस नहीं है? (क) कार्बन डाइऑक्साइड (ख) सलफर डाइऑकक््साइड (ग) मेथेन (घ) नाइट्रोजन brainly.in/question/11515326 |
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| 45. |
Observe your surroundings (a)How does the cow eat grass |
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Answer» When a cow first takes a bite of grass, it is chewed very little before it is swallowed. ... This process of SWALLOWING, “un-swallowing”, re-chewing, and re-swallowing is called “rumination,” or more commonly, “chewing the CUD.” Rumination enables cows to chew grass more completely, which IMPROVES digestion. |
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| 47. |
Define cell wall in 5 points |
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Answer» # A CELL wall is a structural layer surrounding some types of cells, just outside the cell MEMBRANE. # It can be tough, flexible, and sometimes rigid. #It provides the cell with both structural support and protection, and also acts as a filtering mechanism.# Cell walls are present in most prokaryotes (EXCEPT mollicute BACTERIA), in algae, fungi and EUKARYOTES including plants but are absent in animals. #A major function is to act as pressure vessels, preventing over-expansion of the cell when water enters. |
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| 48. |
Full form of science in angry way |
| Answer» C. CHOR I. intekam E. enemy n. nonsense c. CHATTER e. entefak. | |
| 49. |
Tugy juicy uuohghuoi huohgtyu. Hiivy. Junction huiiv |
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Answer» sjskkskdkjdhnannzjkdkjfhfjfkskskn |
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| 50. |
Scientists are more interested in sedimentary rocks .Write down the importance of sedimentary rocks. |
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Answer» Sedimentary rocks Sedimentary rocks are types of rock that are formed deposition of SMALL particles and cementation of MINERAL or organic particles on the FLOOR of oceans at the Earth's surface.Sedimentary rock is one of the three MAIN rock groups (ALONG with igneous and metamorphic rocks) Sedimentary rocks are also important sources of natural resources like coal, coal, fossil fuels. |
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