Question

1. which of the following is positive catalyst .
i.MnO2 ii. alcohol iii. both (i) (ii) iv. none of them

2. in the given chemical reacton ,N2+3H=2NH3,which is promote?
i.N2 ii H2 iii. Fe iv. MO

3. respiration is
i.an exothermic process
ii.an endothermic process
iii. neither exothermic nor endothermic
iv. can be exothermic or endothermic

4. the information not conveyed by a balanced and fully labelled chemical equation is
i. whether the reaction is exothermic or endothermic
ii. whether the reaction is relaible or not
iii. whether the reaction is show or fast
iv. whether any product is a solid or a soluble susbtance.

5. which of the following does not result in the evolution of H2gas?
i. zinc and HCI ii. Al and HNO3 iii. Fe and H2SO4 iv. Mg and dil.HNO3.

6.which of the following on miximg with water will result in rise of temperature
i. NaCl ii. KNO3 III. CuSO4.5H2O IV. NaOH

Answer 1

Answer:

1.alcohol

2.Mo

3.i

4.iv

5.ii

6.Iv