0% 46 123456789101112131415161718192021222324252627282930 STREAM 2- PHYSICS , CHEMISTRY, BIOLOGY The number of attempts remaining is 1 NameGenderGenderMaleFemaleDate of BirthStandardStandard1112OtherWhich Stream ?Which Stream ?Physics, Chemistry, Mathematics (PCM)Physics, Biology, Chemistry (PCB)Accounts, Business Studies, Mathematics (ABM)BoardBoardState BoardCBSEI.C.S.EContact No:Email idResidential Address:District & Pin codeStateSchool NameSchool Contact Number *School Address *What is your future goals in relation to your Studies? * 1 / 30 Q1. Magnetic moment for solenoid and corresponding bar magnet is equal for both more for solenoid more for bar magnet none of these 2 / 30 Q2. In the case of an inductor voltage lags the current by π/2 voltage leads the current by π/2 voltage leads the current by π/3 voltage leads the current by π/4 3 / 30 Q3. In a pure capacitive circuit if the frequency of ac source is doubled, then its capacitive reactance will be remains same doubled halved zero 4 / 30 Q4. In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to constitute the circuit? Only resistor Resistor and inductor Resistor and capacitor Only inductor 5 / 30 Q5. In which of the following circuits the maximum power dissipation is observed? Pure capacitive circuit Pure inductive circuit Pure resistive circuit None of these 6 / 30 Q6. In a series LCR circuit the voltage across an inductor, capacitor and resistor are 20 V, 20 V and 40 V respectively. The phase difference between the applied voltage and the current in the circuit is 30° 45° 60° 0 7 / 30 Q7. At resonant frequency the current amplitude in series LCR circuit is maximum minimum zero infinity 8 / 30 Q8. Quality factor and power factor both have the dimensions of Time Frequency Work Angle 9 / 30 Q9. For an ideal-step-down transformer, the quantity which is constant for both the coils is current in the coils the voltage across the coils resistance of coils power in the coils 10 / 30 Q10. A transformer works on the principle of Self-induction Electrical inertia Mutual induction Magnetic effect of the electrical current 11 / 30 1). Which of the following does not belong to the group of Doberiener’s triad? Li, Na, and K He, Na and Ar Ca, Sr and Ba CL, Br and I 12 / 30 2). The attributes of corresponding elements are the periodic functions of the ________ Atomic Weights Atomic Number Chemical properties No of protons 13 / 30 3). An element’s physical and chemical properties are a periodic function of its mass Atomic mass Element behaviour No of electrons Atomic number 14 / 30 4). Mendeleev’s periodic table’s horizontal rows were called __________ periods groups series rows 15 / 30 5). The greatest number in the period correlates to the highest number in the period. Azimuthal quantum number Spin quantum number Magnetic quantum number Principal quantum number 16 / 30 6) Which of the following elements belongs to the periodic table’s second transition series? Ni Au La Nb 17 / 30 7). What are the transition elements’ characteristics? Metallic Non-metallic Metalloid Varies from element to element 18 / 30 8). What may a litmus paper be used to test? Acidic nature only Basic nature only Both acidic nature and basic nature Nothing 19 / 30 9). What is the first element in the periodic table’s fourth transition series? Scandium Yttrium Actinium Lanthanum 20 / 30 10). The ions O2- , F– , Na+ , and Mg2+ are referred to as __________ Isoelectronic species Isoneutral species Isotopes Isobars 21 / 30 1. How many biogeographic does India have? 5 6 8 10 22 / 30 2. Lime is generally added to soil. Salty Dry Alkaline Acidic 23 / 30 3. _______ has the maximum genetic diversity in India Potato Tea Mango Teak 24 / 30 4. _______ is one of the most prevalent hotspots of biodiversity in India. Himalayas Western Ghats Ganges None of the above 25 / 30 5. Galápagos finches are a good example of ______ . Extinction Heterochromia Island gigantism Adaptive radiation 26 / 30 6. Which of the following facts is incorrect? Global warming is the rise in the average temperature of the earth’s climate system Eutrophication is observed in water bodies The greenhouse effect is a natural phenomenon Ozone is harmless to breathe 27 / 30 7. Areas that are under the influence of DDT may observe a decline in the population of birds. This is due to the fact that Birds stopped laying eggs altogether The eggs did not hatch Predation of the eggs increased None of the above. 28 / 30 8. Measuring BOD (biological oxygen demand) is primarily used for Estimating the types of microbes Determine the level of dissolved oxygen Estimating the quantity of organic matter in sewage water None of the above 29 / 30 9. Cosmic rays, such as gamma rays are a source of Soil Pollution Noise Pollution Thermal Pollution Radiation pollution 30 / 30 10. The primary agenda of the Kyoto protocol is Regulation of hazardous wastes Regulate the production of nuclear energy Control anthropogenic sources of greenhouse gases None of the above Your score is LinkedIn Facebook Twitter 0% Exit
