100 ml of 0.3 N HCl is mixed with 200 ml of 0.6 N H2SO4. The final normality of the resulting solution will be

(1) 0.1 N

(2) 0.2 N

(3) 0.3 N

(4) 0.5 N

0.3 N HCl के 100 ml को 0.6 N H2SOके 200 ml के साथ मिलाया जाता है। परिणामी विलयन की अंतिम नॉर्मलता होगी                                                  [DPMT 1994]

(1) 0.1 N

(2) 0.2 N

(3) 0.3 N

(4) 0.5 N

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40 g NaOH (i=2) is dissolved in 1L volatile solvent vapour pressure  of this solution becomes equal to its solid phase at 300K. What is the freezing point of pure solvent.

(Density = 1g/mL) (kf=1.8 k kgmol-1)

1. 296.4 K

2. 303.6 K 

3. 297.5 K

4. 302.4 K

40 g NaOH (i = 2) 1L वाष्पशील विलायक में घोला जाता है, तो इस विलयन का वाष्प दाब 300K पर अपने ठोस प्रावस्था के बराबर हो जाता है। शुद्ध विलायक का हिमांक क्या है।

(घनत्व = 1g/mL) (kf=1.8 k kgmol-1)

1. 296.4 K

2. 303.6 K 

3. 297.5 K

4. 302.4 K

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The density of NH4OH solution is found to be 0.6 g/ml. It contains 35% by mass of NH4OH. The normality of the solution is

(1) 4.8 N

(2) 10 N

(3) 0.5 N

(4) 6 N

 NH4OH विलयन का घनत्व 0.6 g/ml पाया गया। इसमें NH4OH के द्रव्यमान द्वारा 35% होता है। विलयन की नॉर्मलता है

(1) 4.8 N

(2) 10 N

(3) 0.5 N

(4) 6 N

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The solution having highest vapour pressure is (Assume 100% ionisation of electrolytes)

1. 1 N KNO3

2. 1 N Ba(NO3)2

3. 1 N Al2(SO4)3

4. 1 N Th(NO3)4

 

सबसे अधिक वाष्प दाब वाला विलयन (विद्युतअपघट्य का 100% आयनन मान लीजिए)

(1) 1 N KNO3

(2) 1 N Ba(NO3)2

(3) 1 N Al2(SO4)3

(4) 1 N Th(NO3)4

 

 64%
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If 'A' contains 2% NaCl and is separated by a semi permeable membrane from 'B', which contains 10% NaCl, which event will occur ?

(1) NaCl will flow from 'A' to 'B'

(2) NaCl will flow from 'B' to 'A'

(3) Water will flow from 'A' to 'B'

(4) Water will flow from 'B' to 'A'

यदि 'A' में 2% NaCl है और 'B' से एक अर्ध पारगम्य झिल्ली द्वारा पृथक किया जाता है, जिसमें 10% NaCl होता है, तो कौन सी घटना घटित होगी?

(1) NaCl 'A' से 'B' में जाएगा

(2) NaCl 'B' से 'A' में जाएगा

(3) जल 'A' से 'B' में जाएगा

(4) जल 'B' से 'A' में जाएगा

 58%
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6g urea is dissolved in 1kg solvent. Value of (T1-T2) will be : (Kf=2 kg K mol-1)

(1) 0.2°C
(2)-0.2°C
(3) 0.1°C
(4)-0.1 K

6g यूरिया को 1kg विलायक में घोल दिया जाता है। (T1-T2) का मान होगा: (Kf=2 kg K mol-1)

*Vapour pressure- वाष्प दाब
*Solid solvent- ठोस विलायक
*solvent- विलायक
*solution- विलयन
*temperature- तापमान


(1) 0.2°C
(2)-0.2°C
(3) 0.1°C
(4)-0.1 K

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If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be?

(1) doubled

(2) halved

(3) tripled

(4) unchanged

यदि तनु विलयन की मोललता दोगुनी हो जाती है, तो मोलल अवनमन स्थिरांक (Kf) का मान होगा?

(1) दोगुना 
(2) आधा 
(3) तीन गुना
(4) अपरिवर्तित

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The molarity of H2SO4 solution that has a density of 1.84 g/cc at 35°C and contains 98% by weight is

(1) 4.18 M

(2) 8.14 M

(3) 18.4 M

(4) 18 M

H2SO4 विलयन की मोलरता ज्ञात कीजिए जिसका 35°C पर घनत्व 1.84 g/cc है और भार से 98% होता है                                                     [CPMT 1983, 2000; CBSE 1996, 2000; AIIMS 2001]

(1) 4.18 M

(2) 8.14 M

(3) 18.4 M

(4) 18 M

 60%
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15 g of methyl alcohol is dissolved in 35 g of water. The weight percentage of methyl alcohol in solution is

(1) 30%

(2) 50%

(3) 70%

(4) 75%

15 g मेथिल एल्कोहल 35 g जल में घोला होता है। विलयन में मेथिल एल्कोहॉल का भार प्रतिशत है

(1) 30%

(2) 50%

(3) 70%

(4) 75%

 50%
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The Van't Hoff factor for 0.1 M Ba(NO3)2 solution is 2.74. The degree of dissociation is [IIT 1999]

(1) 91.3%

(2) 87%

(3) 100%

(4) 74%

0.1M Ba(NO3)2 विलयन के लिए वांट हॉफ गुणक 2.74 है। वियोजन की मात्रा है? [IIT 1999]

(1) 91.3%

(2) 87%

(3) 100%

(4) 74%

 53%
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