NEET 2024 Question Paper with Answers and Solutions PDF T4 in English

NEET Questions

• 1.

  \( \sigma_s \), \( k_B \) અને \( b \) અનુક્રમે સ્ટેફન-બોલ્ટ્ઝમેન સ્થિરાંક, બોલ્ટ્ઝમેન સ્થિરાંક અને વીનના વિસ્થાપન નિયમના સ્થિરાંકને દર્શાવે છે. \( \sigma_s k_B^{-1} b \) નું પરિમાણ છે:

  • \( [L^{-1}T^{-1}K^{-4}] \)
  • \( [L^{-1}T^{-1}K^{-2}] \)
  • \( [L^{-1}K^{-2}] \)
  • \( [L^{-1}T^{-1}K^{-3}] \)
  View Solution

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• 2.

  निम्नलिखित में से कौन एक एन्जियोस्पर्म (आवृतबीजी) के मादा युग्मकोद्भिद (मेगागैमेटोफाइट) में अंडे के निषेचन के लिए परागनलिका को मार्गदर्शन करने में सहायता करता है?

  • केंद्रीय कोशिकाएँ
  • ध्रुवीय केंद्रक
  • प्रतिव्यासजन कोशिकाएँ (Antipodals)
  • सहायक कोशिकाएँ (Synergids)
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• 3.

  In an adiabatic expansion, the temperature of one mole of an ideal monoatomic gas \((\gamma=\frac{5}{3})\) decreases from \(60\,\text{K}\) to \(50\,\text{K}\). The work done by the gas in the process is: (Take the universal gas constant as \(R=8.3\,\text{J mol}^{-1}\text{K}^{-1}\))

  • \(166\,\text{J}\)
  • \(41.5\,\text{J}\)
  • \(83\,\text{J}\)
  • \(124.5\,\text{J}\)
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• 4.

  For a zero-order reaction, where \(k = 1.0\ mol\ L^{-1}\ min^{-1}\). If the initial concentration of A is \(2\ M\), then the time taken for completion of \(75\%\) of the reaction will be

  • \(2.0\ min\)
  • \(1.5\ min\)
  • \(0.75\ min\)
  • \(1.0\ min\)
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• 5.

  For a salt XY, which is a strong electrolyte, the plot of \(\Lambda_m\) versus \(\sqrt{c}\) has a slope of \(-90.0\text{ S cm}^2\text{ mol}^{-3/2}\text{ L}^{1/2}\) at \(298\text{ K}\). At \(0.01\text{ M}\) concentration of XY, the value of \(\Lambda_m\) is \(145.0\text{ S cm}^2\text{ mol}^{-1}\). The limiting molar conductivity of \(\text{Y}^-\) ion (\(\lambda^\circ_{\text{Y}^-}\), in \(\text{S cm}^2\text{ mol}^{-1}\)) at \(298\text{ K}\) will be (Given: \(\lambda^\circ_{\text{X}^+} = 74.0\text{ S cm}^2\text{ mol}^{-1}\))

  • \(76.0\)
  • \(80.0\)
  • \(100.0\)
  • \(90.0\)
  View Solution

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• 6.

  Consider that \(\sigma_s\), \(k_B\), and \(b\) represent Stefan-Boltzmann constant, Boltzmann constant, and Wien's displacement law constant, respectively. The dimension of \(\sigma_s k_B^{-1} b\) is:

  • \([L^{-1}T^{-1}K^{-4}]\)
  • \([L^{-1}T^{-1}K^{-2}]\)
  • \([L^{-1}K^{-2}]\)
  • \([L^{-1}T^{-1}K^{-3}]\)
  View Solution