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NEET Test 125...

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  • Question 1
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    Consider the reaction N2+ 3H→ 2NH3 carried out at constant temperature and pressure. If ΔH and ΔE are the enthalpy and internal energy changes for the reaction, which of the following expression is true?

  • Question 2
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    In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to

  • Question 3
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    By which of the following reagents, butanoic acid can be converted into butane?

  • Question 4
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    The X- coordinates of the particles of a system of bodies whose centre of mass is at origin will be?

  • Question 5
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    Figure shows three resistor configurations R1,R2 and R3 connected to 3 V battery. If the power dissipated by the configuration R1,R2 and R3 is P1,P2 and P3 respectively then:

  • Question 6
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    A junction diode has a resistance of 25 when forward-biased and 2500 when reverse-biased. The current in the arrangement shown in the figure will be

  • Question 7
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    Which among the following is not an exact differential?

  • Question 8
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    A resonance air column of length 40 cm resonates with a tuning fork of frequency 450 Hz. Ignoring end corrections, the velocity of sound in air will be:

  • Question 9
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    A rocket is fired from Earth to the Moon. The distance between Earth and the Moon is  and the mass of Earth is 81 times the mass of the Moon. The gravitational force on the rocket will be zero when its distance from the Moon is:

  • Question 10
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    The displacement of electrons in multiple bonds in the presence of attacking reagent is called:

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