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JEE Main Test 1...

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  • Question 1
    4 / -1

    A mass m1 connected to a horizontal spring performs S.H.M. with amplitude 'A'. While mass m1 is passing through mean position another mass m2 is placed on it so that both the masses move together with amplitude

  • Question 2
    4 / -1

    A current passing through a circular coil of two turns produces a magnetic field B as its centre. The coil is then rewound so as to have four turns and the same current is passed through it. The magnetic field at its centre now is:

  • Question 3
    4 / -1

    Assuming that the junction diode is ideal, the current in the arrangement shown in figure is?

  • Question 4
    4 / -1

    Directions For Questions

    Match List - I with List - II.

    List - I List - II
    (a) PCl5 (i) Square pyramidal
    (b) SF6 (ii) Trigonal planar
    (c) BrF5 (iii) Octahedral
    (d) BF3 (iv) Trigonal bipyramidal

    ...view full instructions

    Choose the correct answer from the options given below.

  • Question 5
    4 / -1

    Directions For Questions

    The incorrect postulates of the Dalton's atomic theory are :

    (A) Atoms of different elements differ in mass.

    (B) Matter consists of divisible atoms.

    (C) Compounds are formed when atoms of different element combine in a fixed ratio.

    (D) All the atoms of given element have different properties including mass.

    (E) Chemical reactions involve reorganisation of atoms.

    ...view full instructions

    Choose the correct answer from the options given below :

  • Question 6
    4 / -1

    The formula of a noble gas species which is isostructural with 

  • Question 7
    4 / -1

    Define a relation R over a class of n × n real matrices A and B as "ARB if there exists a non-singular matrix P such that PAP-1 = B". Then which of the following is true?

  • Question 8
    4 / -1

  • Question 9
    4 / -1

    Team 'A' consists of 7 boys and n girls and Team 'B' has 4 boys and 6 girls. If a total of 52 single matches can be arranged between these two teams when a boy plays against a boy and a girl plays against a girl, then n is equal to:

  • Question 10
    4 / -1

    A hyperbola passes through the foci of the ellipse  and its transverse and conjugate axes coincide with major and minor axes of the ellipse, respectively. If the product of their eccentricities is one, then the equation of the hyperbola is:

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