Question: For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ?

• 1. Kc is generally greaer than Kp
• 2. Kc is generally less than Kp
• 3. Kc is generally equal to Kp
• 4. Kc is equal to Kp if the total moles of reactants and products are equal

Question: Which one of the following aqueous solutions will be basic ?

• 1. NaCI
• 2. Na2SO4
• 3. Na2CO3
• 4. FeCl3

Question: Reaction which proceeds in both directions is called_______________?

• 1. reversible
• 2. irreversible
• 3. spontaneous
• 4. non-spontaneous

Question: Conversion of reactant into product in unit time is called________________?

• 1. rate of forward reaction
• 2. rate of backward reaction
• 3. rate constant
• 4. rate co-efficient

Question: Unit of Kc is_______________?

• 1. moles2dm+6
• 2. moles-2dm+6
• 3. moles+2dm-6
• 4. Kc may or may not have units

Question: Rate expression for ammonia synthesis is___________________?

• 1. Kc=x2/(a-x)(b-x)
• 2. Kc=x2/v(a-x)
• 3. Kc=4×2/(a-2x)2(b-x)
• 4. Kc=4x2v2/(a-x)(b-3x)3

Question: Catalyst used to speed up the reaction of ammonia synthesis is________________________?

• 1. V2O5
• 2. V2O5 and Pt
• 3. Fe
• 4. Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2

Question: By the addition of base in waterpH will be_______________?

• 1. more than 7
• 2. less than 7
• 3. equal to 7
• 4. no effect

Question: Negative log of mular concentration of H+ ions is called___________________?

• 1. pH
• 2. pOH
• 3. pKa
• 4. pKw

Question: Any substance which accepts H+ is base favours the concept___________________?

• 1. Lowrys
• 2. Lewis
• 3. Arrhenius
• 4. None of these