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  • 2 answers

Tashu Bharti 9 months, 2 weeks ago

Mahabharat ki bhasha sanskrit
महाभारत अनक भासो मा लिखी गई एच इसकी मूल भाषा संस्कृत एच इसकी विषय वास्तु को दो बागो मा बत्ता गया ह 1 आख्यान 2 ऊप्पधा सत्मक
Madhuri and Arsh were partners in a firm sharing profits and losses in the ratio of 3 : 1. Their Balance Sheet as at 31st March, 2019, was as follows : Liabilities Amount Assets Amount Capitals : Machinery 4,70,000 Madhuri 3,00,000 Investments 1,10,000 Arsh 2,00,000 5,00,000 Debtors 1,20,000 Workmen compensation fund 60,000 Less : provision for d/d 10,000 1,10,000 Creditors 1,90,000 Stock 1,40,000 Employees provident fund 1,10,000 Cash 30,000 8,60,000 8,60,000 On 1st April, 2019, they admitted Jyoti into partnership for 1/4th share in the profits of the firm. Jyoti brought proportionate capital and Rs 40,000 as her share of goodwill premium. The following terms were agreed up on : (i) Provision for doubtful debts was to be maintained at 10% on debtors. (ii) Stock was undervalued by Rs 10,000. (iii) An old customer whose account was written off as bad, paid Rs 15,000. (iv) 20% of the investments were taken over by Arsh at book value. (v) Claim on account of workmen’s compensation amounted to Rs 70,000. (vi) Creditors included a sum of Rs 27,000 which was not likely to be claimed.
  • 2 answers

Atharv Aryan 4 months, 2 weeks ago

answer

Girish Purohit. 1 year, 1 month ago

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Aseem Mahajan 1 year, 1 month ago

everything is useless

Vishal Kashyap 1 year, 1 month ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.
  • 2 answers

Tanuj Kumar 1 year ago

Controlling can be defined as comparison between performed planned with actual planned

Ronak Jain 1 year ago

Controlling is the most important functions, controlling is goal oriented and forward looking as well backward looking it help to supervise the employee and tell them what to do and how to do
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Sonal Maurya 9 months, 2 weeks ago

CH3CH=CH2 +Hbr/H2O2 = CH3CH2CH2Br + NaOH/H* = CH3CH2CH2OH

Keshav Chauhan 10 months, 3 weeks ago

CH3 - CH = CH2 + BH3 = CH3-CH2-CH2OH

Rudra Dwivedi 1 year, 1 month ago

CH3-CH=CH2 + H2O. →
  • 1 answers

Nikita Dagar 1 year, 1 month ago

How could the development of the school of art be possible? Describe the main school of miniature painting and it's sub school.
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Sukhpreet Singh Sahota 6 months, 2 weeks ago

floating charge

Chhotu Mishra 10 months, 4 weeks ago

Hii

Jyotika Sen 11 months, 1 week ago

Floating charge
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Prithvii K 1 year ago

Interaction between two species in which one is called predator and other is prey. e.g, Cat(predator) eats mouse(prey). This happens to maintain the balance of the ecosystem and to survival of the species.

Khushbu Yadav 1 year, 1 month ago

Gene therapy
  • 3 answers

Ankit Singh 1 year, 1 month ago

22(2x^°-y^°)

Johirul Islam 1 year, 1 month ago

3+5

Johirul Islam 1 year, 1 month ago

5+6
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  • 2 answers

Rudra Dwivedi 1 year, 1 month ago

Bio Diesel is best topics

Nikhil Kumar 1 year, 1 month ago

Which class
  • 2 answers

Aseem Mahajan 1 year, 1 month ago

write it like this
$$\left[\begin{array}{cc}6 & 5 \\ 1 & -1\end{array}\right]$$

Lavina ..... 1 year, 1 month ago

[6 5] [-1 1]😂 =[6*-1 + 5*1] = [-6+5] =[-1] answer
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The rajasthani se: Maru ragini Chaugan player Krishna on swings Radha bani Thani Bharat meets Rama at Chitrakoot The Moghal se: Krishna lifting mount Govardhan Marriage processing Dara sikhon ✨️Bs abhi inka pta hai
General Instructions: Read the following instructions carefully. There are 33 questions in this question paper with internal choice. SECTION A consists of 16 multiple-choice questions carrying 1 mark each. SECTION B consists of 5 short answer questions carrying 2 marks each. SECTION C consists of 7 short answer questions carrying 3 marks each. SECTION D consists of 2 case - based questions carrying 4 marks each. SECTION E consists of 3 long answer questions carrying 5 marks each. All questions are compulsory. Use of log tables and calculators is not allowed. SECTION A The following questions are multiple-choice questions with one correct answer. Each question carries 1 mark. There is no internal choice in this section. 1.Which of the following solutions will have the highest conductivity at 298 K? 0.01 M HCl solution 0.1 M HCl solution 0.01 M CH3COOH solution 0.1 M CH3COOH solution 2.The vitamins which can be stored in our body are: Vitamin A, B, D and E Vitamin A, C, D and K Vitamin A, B, C and D Vitamin A, D, E and K 3.What is IUPAC name of the ketone A, which undergoes iodo form reaction to give CH3CH=C(CH3)COONa and yellow precipitate of CHI3? 3-Methylpent-3-en-2-one 3-Methylbut-2-en-one 2, 3-Dimethylethanone 3-Methylpent-4-one 4.Which of the following is not correct? In haloarenes, the electron pairs on halogen atom are in conjugation with -electrons of the ring The carbon-magnesium bond is covalent and non-polar in nature. During SN1 reaction, the carbocation formed in the slow step being sp2 hybridised is planar Out of CH2= CH-Cl and C6H5CH2Cl, C6H5CH2Cl is more reactive towards SN1 reaction 5.Which of the following is not correct? In haloarenes, the electron pairs on halogen atom are in conjugation with -electrons of the ring The carbon-magnesium bond is covalent and non-polar in nature. During SN1 reaction, the carbocation formed in the slow step being sp2 hybridised is planar Out of CH2= CH-Cl and C6H5CH2Cl, C6H5CH2Cl is more reactive towards SN1 reaction 6.Match the properties with the elements of 3d series: Lowest enthalpy of atomisation Sc shows maximum number of oxidation states Mn transition metal that does not form coloured compounds Zn Ti (i) (r), (ii) (q), (iii) (p) (i) (r), (ii) (s), (iii) (p) (i) (p), (ii) (q), (iii) (r) (i) (s), (ii) (r), (iii) (p) 7.In which of the following solvents, the C4H8NH3+X– is soluble; ether acetone water bromine water 8.Which of the following observation is shown by 2-phenyl ethanol with Lucas Reagent? Turbidity will be observed within five minutes No turbidity will be observed Turbidity will be observed immediately Turbidity will be observed at room temperature but will disappear after five minutes. 9.Anisole undergoes bromination with bromine in ethanoic acid even in the absence of iron (III) bromide catalyst Due to the activation of benzene ring by the methoxy group. Due to the de-activation of benzene ring by the methoxy group. Due to the increase in electron density at ortho and para positions Due to the formation of stable carbocation. 10.Which of the following is not considered a transition element? Scandium Silver Vanadium Zinc 11.Zirconium (Zr, Atomic number 40) and Hafnium (Hf, Atomic number 72) are transition series metals of group 4. They are found together in nature and are difficult to separate from each other. Which of the following is the reason for the above? The almost identical radii of the atoms. The elements belong to the same group. The elements belong to adjacent periods. The presence of the same number of unpaired electrons in both the elements. 12.Which of the following would be among the products of the reactions between ammonia reacts with bromoethane? CH3CH2NH2 (CH3CH2)2NH (CH3CH2)3N (CH3CH2)4N+Br− only i only i and ii only i, ii, and iii all- i, ii, iii and iv 13.Which one of the following is a synthetic halogen compound? a) Chloramphenicol b) Diphenyl hydramine c) Chloroquine d) Omeprazole 14.Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium? a) [Xe] 4f 65d26s2 b) [Xe] 4f75d1 6s2 c) [Xe] 4f86d2 d) [Xe] 4f95s1 15.Alcoholic compounds react: a) only as nucleophiles. b) both as nucleophiles and electrophiles. c) only as electrophiles. d) None of these 16.p – toluenesulphonyl chloride is used to: a) as a replacement of benzenesulphonyl chloride b) All of these c) for the distinction of primary, secondary and tertiary amines d) for the separation of a mixture of amines SECTION B 17.5% solution of Na2SO4.10H2O (MW = 3 22) is isotonic with 2% solution of non- electrolytic, non volatile substance X. Find out the molecular weight of X. 18.Arrange the isomeric dichlorobenzene in the increasing order of their boiling point and melting points. Explain why the electrophilic substitution reactions in haloarenes occur slowly and require more drastic conditions as compared to those in benzene. 19.Convert the following: Benzene to m-nitrobenzaldehyde Bromobenzene to benzoic acid 20.Explain the following observations: The transition elements have great tendency for complex formation. There is a gradual decrease in the atomic sizes of transition elements in a series with increasing atomic numbers. 21 define .carbonyl group. SECTION c 22.Nitration is an example of aromatic electrophilic substitution and its rate depends upon the group already present in the benzene ring. Out of benzene and phenol, which one is more easily nitrated and why? Or How do you convert the following? Benzoic acid to benzaldehyde. Ethyne to ethanal. Acetic acid to methane 23.A mixture of 0.5 moles acetaldehyde and 0.5 moles diethyl ketone is treated with 1 mole of sodium cyanide (NaCN). What will be the major product in this reaction? Give two reasons for your answer Or Show steps to convert nitrobenzene to phenol. The table below shows the observation when sodium reacts with ethanol and phenol. Ethanol Solution of phenol in ethanol Sodium sinks, evolves hydrogen steadily Sodium sinks, evolves hydrogen rapidly The reaction in each case involves reduction of hydrogen ion by sodium. Write down an ionic reaction for both the cases. Which is stronger acid- phenol or ethanol? Why? 24.Explain the steps of preparation of potassium dichromate? Or Transition metals generally form coloured ions. Why? Which of the following will be colored? 25.What is the lanthanoid contraction? What are its causes and consequences? 26. A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution. 27.. A compound ‘A’ with molecular formula C4H10O on oxidation forms compound ‘B’ gives positive iodoform test and on reaction with CH3MgBr followed by hydrolysis gives (c). Identify A, B & C. Or Give the equations of reactions for the preparation of phenol from cumene. 28.Chloroform is stored in dark coloured bottles. Section D 29.Read the text carefully and answer the questions: The d-block of the periodic table contains the elements of the groups 3 to 12 and are known as transition elements. In general, the electronic configuration of these elements is (n - 1)d1-10 ns1-2. The d-orbitals of the penultimate energy level in their atoms receive electrons giving rise to the three rows of the transition metals i.e. 3d, 4d and 5d series. However, Zn, Cd and Hg are not regarded as transition elements. Transition elements exhibit certain characteristic properties like variable oxidation stables, complex formation, formation of coloured ions, alloys, catalytic activity etc. Transition metals are hard (except Zn, Cd and Hg) and have a high melting point. Why are Zn, Cd and Hg non-transition elements? OR Why are melting points of transition metals high? Which transition metal of 3d series does not show variable oxidation state? Why do transition metals and their compounds show catalytic activity 30.An organic compound ‘A’ having molecular formula C5H10O gives negative Tollens’ test, forms n-pentane on Clemmensen reduction but doesn’t give iodoform test. Identify ‘A’ and give all the reactions involved. Carry out the following conversions: Propanoic acid to 2-Bromopropanoic acid Benzoyl chloride to benzaldehyde How will you distinguish between benzaldehyde and acetaldehyde Section E 31.Write the outer shell electronic configuration of an element with atomic number 24. Why is this different from the elements that are adjacent to it in the periodic table? Why is Hg not considered as a transition element? The third ionisation enthalpy of a few transition elements are given below: Element Sc Ti V Cr Mn Fe Co Ionisation enthalpy (kJ mol-1) 2393 2657 2833 2990 3260 2962 3243Explain the reason for the break in the trend of steady increase in third ionisation enthalpy as shown in the table. Based on this, what can be said about the second ionisation energy of Cr as compared to that of Mn? Or Write the structures of the following organic halogen compounds. (i) 2-Chloro-3-methylpentane (ii) p-Bromochlorobenzene (iii) 1-Chloro-4-ethylcyclohexane (iv) 2-(2-Chlorophenyl)-1-iodooctane (v) Perfluorobenzene (vi) 4-tert-Butyl-3-iodoheptane (vii) 1-Bromo-4-sec-butyl-2-methylbenzene (viii) 1,4-Dibromobut-2-ene 32.The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase. Or write the structures of the following compounds. (i) α-Methoxypropionaldehyde (ii) 3-Hydroxybutanal (iii) 2-Hydroxycyclopentanecarbaldehyde (iv) 4-Oxopentanal (v) Di-sec-butyl ketone (vi) 4-Fluoroacetophenone 33.Write structures of the compounds whose IUPAC names are as follows: (i) 2-Methylbutan-2-ol (ii) 1-Phenylpropan-2-ol (iii) 3,5-Dimethylhexane -1, 3, 5-triol (iv) 2,3 - Diethylphenol (v) 1 - Ethoxypropane (vi) 2-Ethoxy-3-methylpentane (vii) Cyclohexylmethanol (viii) 3-Cyclohexylpentan-3-ol (ix) Cyclopent-3-en-1-ol (x) 3-Chloromethylpentan-1-ol.
  • 2 answers

Ashutosh Singh 1 year, 1 month ago

Waah beta ! Poora question paper hi chhap diya

Ankit Singh 1 year, 1 month ago

Kya hai ye pura paper hi likh diye ho
  • 1 answers

Kashish Gurawalia 1 year, 1 month ago

Autor
  • 0 answers
  • 1 answers

Krish Agrawal 1 year ago

Ernest Rutherford's atomic model, also known as the Rutherford model, was proposed in the early 20th century. It is primarily based on two key postulates: 1. **The Nucleus**: Rutherford postulated that an atom consists of a tiny, dense, and positively charged core at its center, known as the nucleus. This nucleus contains most of the atom's mass and is where the positively charged protons are located. Electrons orbit around the nucleus. 2. **Electron Orbits**: Rutherford proposed that electrons orbit the nucleus in well-defined, circular or elliptical paths. These orbits are sometimes referred to as electron shells or energy levels. Electrons in different shells have different energy levels, and they can jump from one energy level to another by absorbing or emitting energy in the form of electromagnetic radiation. Rutherford's model was groundbreaking because it replaced the earlier Thomson model, which depicted atoms as a "plum pudding" with electrons distributed throughout a positively charged sphere. Rutherford's experiments, most notably the famous gold foil experiment, provided evidence for the existence of the atomic nucleus and laid the foundation for our modern understanding of atomic structure. However, Rutherford's model had limitations and was eventually refined by Niels Bohr and others to account for the quantization of energy levels in electrons and the behavior of atoms in more detail.
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Krish Agrawal 1 year ago

To calculate the currents in the primary and secondary of a transformer, you can use the transformer equation, which relates the primary and secondary voltages and currents. The equation is: (Vp / Vs) = (Np / Ns) Where: - Vp is the primary voltage. - Vs is the secondary voltage. - Np is the number of turns in the primary coil. - Ns is the number of turns in the secondary coil. In your case, you have: - Np = 500 - Ns = 10 Now, let's calculate the primary voltage (Vp) and the secondary voltage (Vs). The primary voltage (Vp) is typically the voltage applied to the primary coil. To find it, you would need more information, such as the source voltage. Assuming you have the primary voltage (Vp), you can use the equation to find the secondary voltage (Vs): (Vp / Vs) = (Np / Ns) Vs = Vp * (Ns / Np) Now, we need to calculate the currents in the primary and secondary. Use Ohm's Law: I = V / R Where: - I is the current. - V is the voltage. - R is the resistance. For the secondary: - Vs is the voltage (which you've found). - The resistive load is 15 Ω. Isolate the secondary current (Is) and calculate it: Is = Vs / Rs Is = Vs / 15 Ω For the primary current (Ip), you can use the transformer equation again: (Vp / Vs) = (Np / Ns) Ip = Is * (Ns / Np) Substitute the values you have to calculate Ip. Please note that to get precise values, you would need the primary voltage (Vp). Without that information, you won't be able to calculate the exact currents in the primary and secondary coils.
  • 4 answers

Pamm Mosu 1 year ago

Ans- difference between urban and rural settlement of India are : (1)urban settlement are have towns , cities and metropolitan area.(2) urban areas have more opportunities for jobs and more developed. (1) rural settlement where places with a low population . (2) And rural settlement people mostly depend on agriculture for their livelihood.

Pamm Mosu 1 year ago

Ans- difference between urban and rural settlement of India are : (1)urban settlement are have towns , cities and metropolitan area.(2) urban areas have more opportunities for jobs and more developed. (1) rural settlement where places with a low population . (2) And rural settlement people mostly depend on agriculture for their livelihood.
Urban areas are more developed than rural areas .

Khushi Kanwar 1 year, 1 month ago

Urban settlements usually refer to cities, suburbs and towns. Urban areas have more development in terms of access to infrastructure and connectivity like airports, ports, railways, housing, roads etc. Rural areas usually don't have much development in terms of infrastructure.

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