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Day 272: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Classification of Elements and Periodicity. Asked once: 25 Jun 2022 (same type asked 3 times) See all 3 of this type

    33
    The pair, in which ions are isoelectronic with Al3+Al^{3 +} is :-

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  2. Question 2

    The p-Block Elements. Asked once: 27 Jul 2022 (same type asked 3 times) See all 3 of this type

    40
    Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?

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  3. Question 3

    Some Basic Concepts of Chemistry. Asked once: 2021 Paper 25 (same type asked 3 times) See all 3 of this type

    58
    A certain gas obeys P(Vm−b)=RTP\left( V_{m}-b \right)=RT. The value of (∂Z∂P)T\left( \frac{\partial Z}{\partial P} \right)_{T} is xbRT\frac{xb}{RT}. The value of xx is

  4. Question 4

    Structure of Atom. Asked once: 25 Jun 2022 (same type asked 3 times) See all 3 of this type

    121
    The minimum energy that must be possessed by photons in order to produce the photoelectric effect with platinum metal is: [Given: The threshold frequency of platinum is 1.3 ×1015 s−1\times10^{15}{\text{ }s}^{- 1} and h=6.6×10−34 J sh = 6.6 \times10^{- 34}\text{ }J\text{ }s.]

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  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 25 Jun 2022 (same type asked 3 times) See all 3 of this type

    142
    A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm30\text{ }atm at 06:00 am when the temperature is 27 ∘C27\ ^{\circ}C. At 03:00 pm, when the temperature is 45∘C45^{\circ}C, the pressure in the tank will be atm. [nearest integer]