Question: Ostwald’s dilution law applicable to:

• 1. All electrolytes
• 2. Strong electrolytes
• 3. Non electrolytes
• 4. Weak electrolytes

Question: The best indicator for titrating HCl with NH4OH is: _________?

• 1. methyl Orange
• 2. litmus
• 3. phenol red
• 4. phenopthalein

Question: Species are formed in one step of reaction mechanism and used up in another step are called:

• 1. Catalyst
• 2. Intermediate
• 3. inhibitor
• 4. activated complex

Question: The one which can break open a plasmid ring is__________?

• 1. Ligase enzyme
• 2. Primase enzyme
• 3. Restriction endonuclease
• 4. ATP-ase enzyme

Question: According to Lamarch evolution occurred as the result of__________?

• 1. Natural selection
• 2. The theory of recapitulation
• 3. Inheritance of acquired characters
• 4. Over production

Question: Allium cepa is the scientific name of______________?

• 1. Onion
• 2. Amaltas
• 3. Potato
• 4. Tomato

Question: Which of the following category is most general with its members lest resembling with each other than the other categries_____________?

• 1. Species
• 2. Genus
• 3. Family
• 4. Order

Question: The first eukarotes appeared about __________ years ago?

• 1. 1.5 billion
• 2. 2.5 billion
• 3. 3.5 billion
• 4. 4.5 billion

Question: Those organisms which can prepare their own food from simple inorganic material and can store energy are called___________?

• 1. Autotrophs
• 2. Heterotrophs
• 3. Procariotique
• 4. Eu-cariotique

Question: Solanum tuberosum is a scientific name of___________?

• 1. Onion
• 2. Amaltas
• 3. Potato
• 4. Tomato