# The corect order regarding the electronegativity of hybrid orbitals of carbon is :

1.  sp > sp2 < sp3

2.  sp > sp2 > sp3

3.  sp < sp2 > sp3

4.  sp < sp2 < sp3

4

sp > sp2 > sp3

Explanation :
No Explanation available for this question

# Which of the following is not a correct statement

1.  The electron-deficient molecules can act as Lewis acids

2.  The canonical structures have no real existence

3.  Every AB5 molecule does in fact have square pyramid structure

4.  Multiple bonds are always shorter than corresponding single bonds

4

Every AB5 molecule does in fact have square pyramid structure

Explanation :
No Explanation available for this question

# The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is :

1.  2

2.  3

3.  4

4.  1

4

2

Explanation :
No Explanation available for this question

# A plot of log x/m versus log p for the adsorption of a gas on a solid gives a straight line with slope equal to :

1.  - log k

2.  n

3.  1/n

4.  log k

4

1/n

Explanation :
No Explanation available for this question

# For the reaction 2A + B → 3C + D which of the following does not express the reaction rate

1.  -(d[C]/3dt)

2.  -(d[B]/dt

3.  d[D]/dt

4.  -d[A]/2dt

4

-(d[C]/3dt)

Explanation :
No Explanation available for this question

# Consider the reaction N2(g) + 3H2(g) → 2NH3(g) The equality relationship between (d[NH3]/dt) and -(d[H2]/dt) is :

1.  (d[NH3]/dt) = -(1/3)(d[H2]/dt)

2.  +(d[NH3]/dt) = -(2/3)(d[H2]/dt)

3.  +(d[NH3]/dt) = -(3/2)(d[H2]/dt)

4.  (d[NH3]/dt) = -(d[H2]/dt)

4

+(d[NH3]/dt) = -(2/3)(d[H2]/dt)

Explanation :
No Explanation available for this question

# Which of the following pairs constitutes a buffer

1.  HNO2 and NaNO2

2.  NaOH and NaCl

3.  HNO3 and NH4NO3

4.  HCl and KCl

4

HNO2 and NaNO2

Explanation :
No Explanation available for this question

# The hydrogen ion concentration of a 10-8 M HCl aqueous solution at 298 K (Kw = 10-14) is

1.  1.0525 x 10-6 M

2.  1.0525 x 10-7 M

3.  8.525 x 10-8 M

4.  1.0525 x 10-8 M

4

1.0525 x 10-7 M

Explanation :
No Explanation available for this question

# A hypothetical electrochemical cell is shown below A|A+ (xM)|| B+ (yM)| B The emf measured is +0.20V. The cell reaction is :

1.  A+ + B → A + B+

2.  A+ + e- → A; B+ + e- → B

3.  the cell reaction cannot be predicted

4.  A + B+ → A+ + B

4

A + B+ → A+ + B

Explanation :
No Explanation available for this question

1.  42.5 g/cm3

2.  2.25 g/cm3

3.  0.225 g/cm3

4.  4.25 g/cm3

4