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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. |
The figure given below shows a schematic plan of blood circulation in humans with labels (i) to (iv). Identify the correct label with its functions?A. (i) Pulmonary vein - takes impure blood from body part.B. (ii) Pulmonary artery - takes blood from lung to heart. C. (iii) Aorta - takes blood from heart to body parts. D. (iv) Vena cava takes - blood from body parts to right auricle. |
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Answer» Correct option is D. (iv) Vena cava takes blood from body parts to right auricle Pulmonary veins: carries oxygenated blood from the lungs to the left atrium. Pulmonary artery: Carries deoxygenated blood from the right ventricle to the lungs. Vena cava: carries deoxygenated blood from the body to the right atrium. Aorta: Carries oxygenated blood from the left ventricle to the body. Correct option is D. (iv) Vena cava takes blood from body parts to right auricle |
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| 2. |
Suppose the control system of a fighter jet consists of three unrelated components in series, and it is desired to have 98% reliability of the system. If the reliability level of all the components is the same, then the reliability of each component (rounded off to three decimal places) is ______ %. |
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Answer» Explanation: Let reliability levels of the First, Second, and Third Component be \(R_1, R_2 \: and \:R_3\) respectively. The reliability level of all the components is the same. i.e. \(R_1 = R_2 = R_3 = R\) Now, A fighter jet consists of three unrelated components in series, ∴ \(R_s = R_1\times R_2 \times R_3 = 0.98\) \(R_s = R\times R \times R\) \(R_s = R^3\) \(0.98 = R^3\) \(R = 0.98^{1/3}\) \(R = 0.993\) R = 99.3 % |
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| 3. |
Non sedating antihistamines |
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Answer» Sedation is rare with non-sedating antihistamines, however, patients should be made aware that a sedative effect may occur and performance of skilled tasks such as operating machinery or driving maybe affected. |
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| 4. |
Assertion:- The formula `((1)/(4)+(1)/(u)=(1)/(f))` connecting u and v for a spherical mirror is valid only for mirros whose sizes are very small compared to their radii of curvatures. Reason:- Laws of reflection are strictly valid for smaller size of of optical system.A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is False.D. If both Assertion `&` Reason are False. |
| Answer» Correct Answer - C | |
| 5. |
Which piece of apparatus can be used to measure the volume of hydrogen produced? |
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Answer» The volume of hydrogen gas produced can be measured using a gas syringe. Gas syringe used to measure the volume of hydrogen produced. The volume of hydrogen gas produced can be measured using a gas syringe. |
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| 6. |
Identify correct increasing strength of intermolecular H-bonding. (1) HCN <H2O < NH3 (2) NH3 <HCN <H2O (3) CH4 <HCN <NH3 (4) CH4 < NH3 < H2O |
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Answer» (3) CH4 <HCN <NH3 Correct order of H-bond strength is CH4 <HCN < NH3 |
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| 7. |
The correct order of increasing intermolecular hydrogen bond strength is(A) HCN < H2O < NH3 (B) HCN < CH4 < NH3 (C) CH4 < HCN < NH3 (D) CH4 < NH3 < HCN |
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Answer» Correct option is (C) CH4 < HCN < NH3 Order of H-Bonding CH4 < HCN < NH3 H2NH . . . NH3 |
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| 8. |
Identify the incorrect statement for PCl5 from the following.(A) In this molecule, orbitals of phosphorous are assumed to undergo sp3d hybridization.(B) The geometry of PCl5 is trigonal bipyramidal. (C) PCl5 has two axial bonds stronger than three equatorial bonds. (D) The three equatorial bonds of PCl5 lie in a plane. |
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Answer» Correct option is (C) PCl5 has two axial bonds stronger than three equatorial bonds. In PCl5, axial bonds are weaker than equatorial. |
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| 9. |
Statement I : Leaching of gold with cyanide ion in absence of air / O2 leads to cyano complex of Au(III). Statement II : Zinc is oxidized during the displacement reaction carried out for gold extraction. In the light of the above statements, choose the correct answer from the options given below. (A) Both Statement I and Statement II are correct (B) Both Statement I and Statement II are incorrect(C) Statement I is correct but Statement II is incorrect (D) Statement I is incorrect but Statement II is correct |
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Answer» Correct option is (D) Statement I is incorrect but Statement II is correct Statement-1 : wrong, Au+ is correct, not Au+3 Statement-2 : correct |
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| 10. |
Give an example for cyanide leaching |
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Answer» Examples of leaching are the alkaline extraction of lignin from wood, the solution of sugar from sugar beets and sugarcane in hot water, and the extraction of metals from ores and concentrates. |
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| 11. |
Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Under what conditions do these grapes ferment? Is it a chemical or a physical change? |
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Answer» Grapes, when attached to the plants, are living and therefore, their own immune system prevents fermentation. The microbes can grow in the plucked grapes and under anaerobic conditions, these can be fermented. This is a chemical change. |
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| 12. |
A copper coin was kept dipped in silver nitrate solution for a few hours/days. What will happen to the copper coin? What will happen to the colour of the solution? |
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Answer» Copper is more reactive than silver. Hence, it displaces silver from the silver nitrate solution according to the given reaction. |
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| 13. |
Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Under what conditions do these grapes ferment? Is it a chemical or a physical change? |
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Answer» Grapes, when attached to the plants, are living and therefore, their own immune system prevents fermentation. The microbes can grow in the plucked grapes and under anaerobic conditions, these can be fermented. This is a chemical change. |
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| 14. |
Why is photosynthesis considered an endothermic reaction? |
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Answer» Photosynthesis is an endothermic reaction because energy, in the form of sunlight is absorbed during the process of photosynthesis by green plants. |
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| 15. |
How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal? |
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Answer» When an active rnetal like Zn reacts with HCl, the gas produced burns with a pop sound which indicates that it is hydrogen gas. Zn(s) + 2HCl(aq) -----> ZnCl2(s)+ H2(g) |
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| 16. |
What type of reaction is represented by the digestion of food in our body? |
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Answer» Decomposition reaction. |
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| 17. |
Write the balanced chemical equations for Caclium hydroxide + carbon dioxide → calcium carbonate + water |
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Answer» Ca(OH)2 + CO2 → CaCO3 + H2O |
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| 18. |
Write a balanced chemical equation with symbols for the following reactions:(i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.(ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water. |
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Answer» (i) BaCl2(aq) + Na2SO4(aq) ------> BaSO4(s) + 2NaCl(aq) |
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| 19. |
Explain oxidation state of hologens |
Answer»
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| 20. |
Iron is a–(a) Paramagnetic substance(b) Diamagnetic substance(c) Ferromagnetic substance(d) Ferrimagnetic substance |
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Answer» Iron is a Ferromagnetic substance |
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| 21. |
Reaction A ⇌ B + 3C at 25ºC temperature reaction on equilibrium. If equilibrium constant and Gibb’s free energy are Y and X respectively. The Gibb’s free energy for reaction 1/2 A ⇌ 1/2 B + 3/2 C is :(1) √x(2) x2 (3) x2/3 (4) X/2 |
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Answer» Correct option: (4) X/2 |
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| 22. |
Assertion : Ferromagnetic compound is more attracted in mwagnetic fieldReason : Because all electron are alligned in same direction.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false. |
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Answer» (3) If assertion is true but reason is false. Ferromagnetic compound is more attracted in magnetic field due to all electron are alligned in same direction |
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| 23. |
MnO is :(1) Ferromagnetic(2) Antiferromagnetic(3) Ferrimagnetic(4) Dimagnetic |
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Answer» (2) Antiferromagnetic |
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| 24. |
The electron in hydrogen atom makes a transition `n_(1)ton_(2)` where `n_1` and `n_2` are the principal quantum number of two states. Assuming the Bohr model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible value of `n_1` and `n_2` are:A. `n_(1)=2` And `n_(2)=1`B. `n_(1)=8` and `n_(2)=2`C. `n_(1)=8` And `n_(2)=1`D. `n_(1)=6` and `n_(2)=3` |
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Answer» Time period `T_(n)=(2pir_(n))/(V_(n))` `T prop (n^(2))/(1//n)` i.e. `T prop n^(3)` `T_(n_(1))=8T_(n_(2))` `n_(1)=2n_(2)` Hence `n_(1)=2n_(2)` Choice (b) and (c) are wrong. |
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| 25. |
Two flask A and B have equla volumes.Flask A contains hydrogen at 600 K while flask B has same mass of `CH_4` at 300 K.Then choose the correct options.A. In flask A the molecules move faster than BB. In flask B the molecules move faster than AC. Flask A contains greater number of molecules than BD. Flask B contains greater number of molecules than A |
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Answer» Correct Answer - A,C (i)molecule those have more `T/M` move faster so `H_2` move faster |
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| 26. |
The increasing order of the strength of hydrogen bond in the following mentioned linkages is : (i)O-H-S (ii)S-H-O (iii)F-H-F (iv)F-H-OA. (i)lt(ii)lt(iv)lt(iii)B. (ii)lt(i)lt(iv)lt(iii)C. (i)lt(ii)lt(iii)lt(iv)D. (ii)lt(i)lt(iii)lt(iv) |
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Answer» Correct Answer - B Strength of H-bond depends on following factors (i)Electronegativity of element covalently bonded to hydrogen atom (ii)Size of electronegative element. (iii)Ease of donation of lone pair of electrons by electronegative element. |
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| 27. |
Match the following and choose the correct option given below (a) `N_(2)toN_(2)^(+)` (p) bond order increases (b) `N_(2)toN_(2)^(-)` (q) bond order decreases ( c) `O_(2)toO_(2)^(+)` ( r) paramagnetism decreases (d) `O_(2)toO_(2)^(-)` (s) paramagnetism desreases (t) No change in bond orderA. `{:(a,b,c,d),(s,p,r,q):}`B. `{:(a,b,c,d),(s,p,q,r):}`C. `{:(a,b,c,d),(r,q,s,p):}`D. `{:(a,b,c,d),(p,s,q,r):}` |
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Answer» Correct Answer - B (a)`N_2=sigma1s^2 sigma^**1s^2 sigma2s^2 sigma^**2s^2 pi2p_x^2 =pi2p_y^2 sigma2p_z^2` B.O.`=(10-4)/2=3` , n=0(D) `N_2^(+)=sigma1s^2 sigma^(**)1s^2 sigma2s^2 sigma^** 2s^2 sigma^** 2s^2 pi2p_x^2 = pi 2p_y^2 sigma2p_z^1` B.O.=`(9-4)/2=2.5` , n=1(P) (b)`O_2^+=sigma1s^2 sigma^**1s^2 sigma2s^2 sigma^**2s^2 sigma2p_z^2 pi2p_x^2 =pi2p_y^2 pi^(.)2p_x^1=pi^(.)2p_y^0` B.O.`=(10-5)/2=2.5` , n=1(P) `O_2^(2+)=sigma1s^2 sigma^(**)1s^2 sigma2s^2 sigma^** 2s^2 sigma^** 2p_z^2 pi2p_x^2 = pi 2p_y^2 sigma^(.)2p_x^0=pi^(.)2p_y^0` B.O.=`(10-4)/2=3` , n=1(D) (c )`B_2=sigma1s^2 sigma^**1s^2 sigma2s^2 sigma^**2s^2 pi2p_x^1 =pi2p_y^1 ` B.O.`=(6-4)/2=1` , n=2(P) `B_2^(+)=sigma1s^2 sigma^(**)1s^2 sigma2s^2 sigma^** 2s^2 pi2p_x^2 = pi 2p_y^1 sigma2p_z^0` B.O.=`(5-4)/2=1//2` , n=1(P) (d )`NO^(-)=sigma1s^2 sigma^**1s^2 sigma2s^2 sigma^**2s^2 sigma2p_z^2 pi2p_x^2 =pi2p_y^2 pi^(.)2p_x^1=pi^(.)2p_y^1 ` B.O.`=(10-6)/2=2.0` , n=2(P) `NO=sigma1s^2 sigma^(**)1s^2 sigma2s^2 sigma^** 2s^2 sigma 2p_z^2 pi2p_x^2 = pi 2p_y^2 pi^(**)2p_x^1=pi^(.)2p_y^0` B.O.=`(10-5)/2=2.5` , n=1(P) |
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| 28. |
Arrange `H_2S,H_2O,H_2Se` and `H_2Te` in increasing order of reducing strength. |
| Answer» Reducing strength: `H_(2)OltH_(2)SltH_(2)SeltH_(2)Te` | |
| 29. |
Write the formula of oxide, superoxide and peroxide of caesium. |
| Answer» The formulae of oxide superoxide and peroxide of caesium are `Cs_(2)O,CsO_(2)` and `Cs_(2)O_(2)` resprectively. | |
| 30. |
The momentum p of a particle changes with the t according to the relation `dp/dt=(10N)+(2N/s)t`. If the momentum is zero at t=0, what will the momentum be at t=10?. |
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Answer» Correct Answer - B `(dp)/(dt)=(10B)+(2N/S)t` Momentum is zero t t=0 Momentum at t=10 sec will be `dp= [(10N)+2N^(-1)t)]dt` Integrating `int^10_0 dp=int^10_0 10 dt+ int ^10_0(2tdt) =[10t+2t^2/2]^10_0 =10xx10-0+100 =100+100=200 kg. m/s` |
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| 31. |
Meaning of ath |
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Answer» बिना थके लगातार किया जाने वाला, जैसे- अथक परिश्रम। |
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| 32. |
Meaning of ithi |
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Answer» (अर्थात् इष्ट) होने की अवस्था या भाव। |
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| 33. |
' क्यों ना मैं मोटर वालों के यहां पैदा हुआ' इस वाक्य में है- * 1 point व्यंग्य शक्ति क्रय शक्ति विक्रय शक्ति उपर्युक्त में से कोई नहीं |
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Answer» व्यंग्य शक्ति |
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| 34. |
When goods are bought from wholesalers/produces and sold them to consumers is termed as ……. |
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Answer» When goods are bought from wholesalers/produces and sold them to consumers is termed as Retail trade. |
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| 35. |
When goods are purchased from a foreign country, it is known as …… |
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Answer» Import trade |
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| 36. |
When goods are bought in bulk from manufacturers/produces and sold in bulk to retailers is called … |
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Answer» Wholesale trade |
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| 37. |
……. means importing of foreign goods from some countries to re-export them to other countries. |
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Answer» Entrepot trade |
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| 38. |
Trade between Bombay and Chennai is an example of ……Trade. |
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Answer» Trade between Bombay and Chennai is an example of Home trade. |
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| 39. |
When trade takes place within the boundaries of a country, it is called …… |
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Answer» Internal trade. |
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| 40. |
Buying and selling of goods between different countries are called ……. |
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Answer» Buying and selling of goods between different countries are called Foreign Trade |
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| 41. |
Identify the nature of activities of the following persons on the basis of economic and non-economic activities. 1. Teacher in a School 2. Gardener 3. Housewife 4. Social Worker5. Businessman 6. Doctor |
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Answer» 1. Economic activity 2. Economic activity 3. Non-economic activity 4. Non-economic activity 5. Economic activity 6. Economic activity |
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| 42. |
……. is the process of buying and selling of goods and services. |
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Answer» Trade is the process of buying and selling of goods and services. |
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| 43. |
Complete the following on the basis of given hint Profession: Fee Business: ……… Employment: ……… |
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Answer» Business: Profit Employment: Salary |
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| 44. |
Mr. Jagajeevanram, who is running a skin clinic, got his MBBS degree and MD degree from Kerala University. Rahul has been working as an attender in the clinic for the last five years. After having this experience, he started his own clinic for skin diseases. (a) Is it possible to start a clinic legally in his own name? Why? (b) What are the essentials to run such an organization? |
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Answer» (a) No. Mr. Rahul cannot start legally the clinic in his own name because he has no professional qualification and training, (b) The essentials to run such an organization are:- 1. There must be specialized knowledge and skill, i.e. MBBS degree approved by Medical Council of India. 2. Formal training. 3. Membership in Indian Medical Association (IMA) 4. Follow the code of conduct enforced by IMA 5. Charging fee for service. |
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| 45. |
Find the ‘odd one’ and state the reason.1. Teaching in a school, Practising in a court, Praying, Running a hotel. 2. Regularity, Body of knowledge, Profit motive, Heavy Risk. 3. No capital, Salary, Freedom of work, Service agreement. |
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Answer» 1. Praying – All others are economic activities. 2. Body of knowledge – All others are features of Business. 3. Freedom of work – All others are features of employment. |
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| 46. |
Mr. Abu produces wheat for personal consumption. Will it be a business activity? |
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Answer» No. It is not for performed for earning profit. |
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| 47. |
Identify the following activities and give reason. 1. A doctor works in a Government hospital 2. A doctor runs his own clinic. 3. A doctor treats his own family members. |
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Answer» 1. Employment – Here, the doctor works for others, on a regular basis and gets a salary for his service. 2. Profession – Here, the doctor is rendering services for others and gets fees for his service 3. Non-economic activity – Here, no monetary benefit is derived but mental satisfaction. |
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| 48. |
Mr. Shyam sold his own house for 5 lakhs, which is purchased for 4 lakhs. Decide whether it is a business activity or not |
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Answer» No. It is not a business activity |
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| 49. |
Identify the type and reward of this activity. Balabhasker, a doctor in a medical college |
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Answer» Employment. The reward for employment is salary |
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| 50. |
Enlist four benefits of working independently. |
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Answer» Four benefits of working independently are: 1.Individuals feel more empowered and responsible. 2.It provides flexibility to choose and define working hours and working mechanisms. 3.Failure and success of the task assigned are accounted by individuals. 4.Individuals become assets to organizations, groups and nations at large. |
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