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TWO IDENTICAL TRAINS ARE MOVING ON RAILS ALONG THE EQUATOR ON THE EARTH IN OPPOSITE DIRECTIONS. WILL THEY EXERT SAME PRESSURE ON THE RAILS? (W.B. BOARD)(3) PLZ PROVIDE NECESSARY JUSTIFICATIONS TO UR ANSWERS......TOMORROW IS M ...
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anyone received it ????????????????? ...
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anyone received it ????????????????? ...
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INTEGER TYPE QUESTIONS: 1) If sound level at a point is increased by 30dB thrn pressure amplitude increases approximately by 4x times find x. 2) A satellite is revolving in circular orbit of radius 3 units with velocity 1 uni ...
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ALKALI METALS (specially for anand) (IIT syll: Oxides, peroxides, hydroxides, carbonates, bicarbonates, chlorides and sulphates of sodium, potassium, magnesium and calcium) Alkali and alkaline earth metal hydroxides Solubilit ...
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Two charges +q1 and -q2 are placed at A and B respectively. A line of force emanates from +q1 at an angle \alpha with AB. At what angle \beta will it terminate at -q2 ? *Image* A) sin^{-1}[\sqrt{\frac{q_{1}}{q_{2}}}sin\frac{\ ...
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Which of the following is coloured due to polarisation? 1. Ag3PO4 2. Cu2Cl2 3. K4[Fe(CN)6] 4. CuF2 ...
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Which of the following is coloured due to polarisation? 1. Ag3PO4 2. Cu2Cl2 3. K4[Fe(CN)6] 4. CuF2 ...
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Which of the following is coloured due to polarisation? 1. Ag3PO4 2. Cu2Cl2 3. K4[Fe(CN)6] 4. CuF2 ...
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Which of the following compounds is expected to be coloured ? A. Ag2SO4 B CuF2 C. MgF2 D. CuCl have doubt b/w B n D ...
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1. Among the following, the surfactant that will form micelles in aq. solution at the lowest molar concentration and ambient conditions is a) CH3(CH2)15N+(CH3)3Br- b) CH3(CH2)11OSO-3Na+ c)CH3(CH2)6 COO-Na+ d) CH3(CH2)11N+(CH3 ...
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1. Which of the following is least alkline *Image* 2. Formic acid when heated with H2SO4 gives (A) (COOH)2 (B) CH3COOH (C) C2H5OH (D) CO 3. Reaction H+ + OH– → H2O is— a) Very slow b) Slow c) fast d) Moderate 4. In DNA ...
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Q1. The image of the plane x-y+z+6=0 with respect to the plane mirror 4x-2y-6z+14=0 is ax+by+cz+6=0, then the value of cos-1a + cos-1b+ cos-1c is ...
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Pragraph : A hydrogen octum in third excited state makes a transtion to first excited state and emit photon. This emitted photon is absorbed by He+ ion which was already in seventh excited state. After absorption of photon He ...
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A)NH3+NaOCl→ p)N2H4 B)NH4NO2+NaOH→ q)N2 C)NH4NO3+Ca(OH)2→ r)NH3 D)(NH4)2Cr2O7→ s)H2O in all reactions heating is done. ...
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1. Statement-I : The sensitiviry of a moving coil galvanometer is increased by placing a suitable megnetic material as a core in side the will. Statement-II : Soft iron has ligh megnetic permeability and can not be easily meg ...
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For CBSE physics board practicals,we are required to do 1 experiment and 2 activities. there do we need to perform them and show the settings to the external? also in chemistry practicals for detection of the inorganic and th ...
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Which of the following aqueous solution of cation (s) gives (s) white ppt. with NaOH and 4 NH OH solution and formed ppt. is/are further completely dissolved in one of the excess reagent a) Cd2+ b) Cr3+ c) Sn2+  d) B ...
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1. Does Fehling’s solution oxidize Benzaldehyde? Or it oxidizes aliphatic aldehydes only? 2. .Aldehyde when reacts with fehling Solution gives a) white ppt b) red ppt c) green ppt d) blue ppt 3. Which of the following gives ...
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*Image* ...
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Q1. Two blocks of mass m and 2m respectively are placed on smooth horizontal ground connected by a spring of spring const. K. Initially the spring is unstretched. (natural length L) m is on the left and 2m is on the right m i ...
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>1. Newton's Method: > Let, the lion catch you. > For every action there is equal and opposite reaction. > Implies you caught lion . >------------------------------------------------------------------------- &g ...
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State whether the order of a chemical reaction can be negetive or not.-Explain . Cite an example . ...
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>1. Newton's Method: > Let, the lion catch you. > For every action there is equal and opposite reaction. > Implies you caught lion . >------------------------------------------------------------------------- &g ...
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1. Among the following, the surfactant that will form micelles in aq. solution at the lowest molar concentration and ambient conditions is a) CH3(CH2)15N+(CH3)3Br- b) CH3(CH2)11OSO-3Na+ c)CH3(CH2)6 COO-Na+ d) CH3(CH2)11N+(CH3 ...
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1. Among the following, the surfactant that will form micelles in aq. solution at the lowest molar concentration and ambient conditions is a) CH3(CH2)15N+(CH3)3Br- b) CH3(CH2)11OSO-3Na+ c)CH3(CH2)6 COO-Na+ d) CH3(CH2)11N+(CH3 ...
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Q1) Which has highest bp? a) 1% soln C6H12O6 b) 1% soln NaCl c) 1% soln ZnSO4 d) 1% soln (NH2)2CO Q2) Weight of water in 1L of 2M NaCl soln of density 1.117g/ml is a) 1117g b) 1000g c) 117g d) 883g ...
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Did anyone get confirmation regarding the aieee application form ? ( http://aieee.nic.in/aieee2010/aieee/Online/AieeeAppStatus.aspx ) ...
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1.According to moseley, a and b in moseley's law are A)independent of the material B)dependent on the material C)a depends on the material,but b is independent of the material D)none of these 2.Photoelectric effect supports q ...
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Wich is a good book for mathematics wich has theorems,formula and gud sums.i need it badly.my maths is in very ad condition. ...
