# 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

B)
Schottky defect

C)
Frenkel defect

D)
Interstitial positions

• question_answer2) The correct order of the mobility of the alkali metal ions in aqueous solution is:           [AIPMT (S) 2006]

A)
$L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}$

B)
$N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}>L{{i}^{+}}$

C)
${{K}^{+}}>R{{b}^{+}}>N{{a}^{+}}>L{{i}^{+}}$

D)
$R{{b}^{+}}>{{K}^{+}}>N{{a}^{+}}>L{{i}^{+}}$

• 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)
$CsH>RbH>KH>NaH>UH$

B)
$KH>NaH>LiH>CsH>RbH$

C)
$NaH>LiH>KH>RbH>CsH$

D)
$LiH>NaH>KH>RbH>CsH$

• 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

B)
K

C)
Li

D)
Na

• question_answer5) The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order [AIPMT (S) 2012]

A)
$L{{i}^{+}}<{{K}^{+}}<N{{a}^{+}}<R{{b}^{+}}$

B)
$R{{b}^{+}}<{{K}^{+}}<N{{a}^{+}}<L{{i}^{+}}$

C)
${{K}^{+}}<N{{a}^{+}}<R{{b}^{+}}<L{{i}^{+}}$

D)
$N{{a}^{+}}<L{{i}^{+}}<{{K}^{+}}<R{{b}^{+}}$

• 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)
$C{{a}^{2+}}$

B)
$M{{g}^{2+}}$

C)
${{K}^{+}}$

D)
$F{{e}^{2+}}$

• 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

B)
Na

C)
K

D)
Rb