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11th Standard Chemistry English Medium Free Online Test Book Back One Mark Questions - Part Three

11th Standard

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Chemistry

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. The number of water molecules in a drop of water weighing 0.018 g is ________.

    (a)

    6.022\(\times\)1026

    (b)

    6.022\(\times\)1023

    (c)

    6.022\(\times\)1020

    (d)

    9.9 \(\times\)1022

  2. Which of the following pairs of d-orbitals will have electron density along the axes ?

    (a)

    dz2, dxz

    (b)

    dxz, dyZ

    (c)

    dz2, dx2-y2

    (d)

    dxy ,dx2-y2

  3. Which of the following elements will have the highest electro negativity ____________

    (a)

    Chlorine

    (b)

    Nitrogen

    (c)

    Cesium

    (d)

    Fluorine

  4. Non-stoichiometric hydrides are formed by _____________

    (a)

    palladium, vanadium

    (b)

    carbon, nickel

    (c)

    manganese, lithium

    (d)

    nitrogen, chlorine

  5. sodium is stored in _____________

    (a)

    alcohol

    (b)

    water

    (c)

    kerosene

    (d)

    none of these

  6. The IUPAC name of the Compound is _____________
     

    (a)

    2,3 - Diemethylheptane

    (b)

    3- Methyl -4- ethyloctane

    (c)

    5-ethyl -6-methyloctane

    (d)

    4-Ethyl -3 - methyloctane

  7. Homolytic fission of covalent bond leads to the formation of ___________.

    (a)

    electrophile

    (b)

    nucleophile

    (c)

    Carbo cation

    (d)

    free radical

  8. The C – H bond and C – C bond in ethane are formed by which of the following types of overlap _________

    (a)

    sp3 – s and sp3 – sp3

    (b)

    sp2 – s and sp2 – Sp2

    (c)

    sp – sp and sp – sp

    (d)

    p – s and p – p

  9. With respect to the position of – Cl in the compound CH3 – CH = CH – CH2 – Cl, it is classified as __________

    (a)

    Vinyl

    (b)

    Allyl

    (c)

    Secondary

    (d)

    Aralkyl

  10. Haemoglobin of the blood forms carboxy haemoglobin with __________.

    (a)

    Carbon dioxide

    (b)

    Carbon tetra chloride

    (c)

    Carbon monoxide

    (d)

    Carbonic acid

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