Solved papers for NEET Chemistry NEET PYQ-Alkali Metals

done NEET PYQ-Alkali Metals Total Questions - 7

• question_answer1) The appearance of colour in solid alkali metal halides is generally due to:   [AIPMT (S) 2006]
  A)
  F-centres
  done clear
  B)
  Schottky defect
  done clear
  C)
  Frenkel defect
  done clear
  D)
  Interstitial positions
  done clear
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• question_answer2) The correct order of the mobility of the alkali metal ions in aqueous solution is:           [AIPMT (S) 2006]
  A)
  \[L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}\]
  done clear
  B)
  \[N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}>L{{i}^{+}}\]
  done clear
  C)
  \[{{K}^{+}}>R{{b}^{+}}>N{{a}^{+}}>L{{i}^{+}}\]
  done clear
  D)
  \[R{{b}^{+}}>{{K}^{+}}>N{{a}^{+}}>L{{i}^{+}}\]
  done clear
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• question_answer3) The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?  [AIPMT (S) 2008]
  A)
  \[CsH>RbH>KH>NaH>UH\]
  done clear
  B)
  \[KH>NaH>LiH>CsH>RbH\]
  done clear
  C)
  \[NaH>LiH>KH>RbH>CsH\]
  done clear
  D)
  \[LiH>NaH>KH>RbH>CsH\]
  done clear
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• question_answer4) Which one of the alkali metals, forms only, the normal oxide, \[{{M}_{2}}O\] on heating in air? [AIPMT (S) 2012]
  A)
  Rb
  done clear
  B)
  K
  done clear
  C)
  Li
  done clear
  D)
  Na
  done clear
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• question_answer5) The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order [AIPMT (S) 2012]
  A)
  \[L{{i}^{+}}<{{K}^{+}}<N{{a}^{+}}<R{{b}^{+}}\]
  done clear
  B)
  \[R{{b}^{+}}<{{K}^{+}}<N{{a}^{+}}<L{{i}^{+}}\]
  done clear
  C)
  \[{{K}^{+}}<N{{a}^{+}}<R{{b}^{+}}<L{{i}^{+}}\]
  done clear
  D)
  \[N{{a}^{+}}<L{{i}^{+}}<{{K}^{+}}<R{{b}^{+}}\]
  done clear
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• question_answer6) The function of “Sodium pump” is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump? [NEET 2015 (C)]
  A)
  \[C{{a}^{2+}}\]
  done clear
  B)
  \[M{{g}^{2+}}\]
  done clear
  C)
  \[{{K}^{+}}\]
  done clear
  D)
                                              \[F{{e}^{2+}}\]
  done clear
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• question_answer7) Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field? [NEET-2017]
  A)
  Li
  done clear
  B)
  Na
  done clear
  C)
  K
  done clear
  D)
  Rb
  done clear
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