_____________ factor will increase the risk in TB labs

• A) Poor ventilation
• B) Poor illumination
• C) All given
• D) Removal of HEPA filters

On the multi-colored chemical label, Red represents ?

• A) Fire Hazard
• B) Health Hazard
• C) Personal Protective Equipment
• D) Reactivity Hazard

Micro incinerators are shielded in an open ended glass or ____________

• A) Silver tubes
• B) Ceramic tubes
• C) Copper tubes
• D) Aluminium foils

Which statement is true for lab coats _____________

• A) Remove-leaving for non-laboratory areas
• B) All given
• C) Deposit for laundry/ should not be taken home
• D) Prevent personal clothing

Lab personnel should label all containers containing chemicals or compounds made in the lab with:

• A) Abbreviations
• B) Symbols
• C) Full name of the chemical
• D) None of the above

In order to insert a foreign gene into a plasmid, both must

• A) be cut by the same restriction enzyme
• B) originate from the same type of cell
• C) be of the same length
• D) have identical DNA sequence

Dangerous exotic agents are contained in

• A) BSL3
• B) BSL4
• C) BSL1
• D) BSL2

Tuberculosis is a dangerous disease and able to transmit from one person to another, such diseases are called?

• A) Contagion diseases
• B) Transmissible diseases
• C) Contagious diseases
• D) Syndromes

In most of the Universities, microbiology laboratories practice

• A) Biosafety Level 2 practices
• B) Biosafety Level 1 practices
• C) Biosafety Level 4 practices
• D) Biosafety Level 3 practices

If the molecules in the reactants collide with enough kinetic energy and this energy is _________the transition state energy, then the reaction occurs and products formed.

• A) higher than
• B) lower than
• C) equal to
• D) none of these

Concept of activation energy is given by_________?

• A) none of these
• B) Michel Faraday
• C) Svante Arrhenius
• D) Boltzmann

The concentration of reactants approaches zero more slowly in a second-order, compared to that in a ________reaction.

• A) first order
• B) zero order
• C) second order
• D) pseudo order

The differential rate law can show us how the_______ of the reaction changes in time, while the integrated rate equation shows how the __________ of species changes over time.

• A) Order, Concentration
• B) Surface, Order
• C) Rate, Order
• D) Rate, Concentration

Formation of double stranded DNA from two complementary strands is

• A) Third order reaction
• B) Order less reaction
• C) Second order reaction
• D) First order reaction

The double bond of ethene consists of two clouds of negative charge corresponding to the σ (sigma) and π (pi)_______________.

• A) atomic orbital
• B) bonding orbitals
• C) molecular orbitals
• D) anti-bonding orbitals

In a pseudo-first-order reaction, if the concentration of the excess reactant is reduced to a minimum value, how does this affect the overall reaction rate?

• A) The reaction rate decreases exponentially
• B) The reaction rate becomes zero
• C) The reaction rate remains constant
• D) The reaction rate decreases linearly

_________indicates the rate of collision and the fraction of collisions with the proper orientation for the reaction to occur.

• A) Boltzmann constant
• B) Arrhenius factor
• C) none of these
• D) Rate constant

ΔGo is the change in Gibbs energy when the reaction happens at ______________.

• A) Transition state
• B) Critical State
• C) 290K
• D) Standard State

If a catalyst is added to the reaction, the activation energy is lowered because

• A) A lower energy transition state is formed
• B) A higher energy transition state is formed
• C) A lower energy transition state is not formed
• D) A normal energy transition state is not formed

Activation energy for a ___________is zero.

• A) low concentration
• B) radical reaction
• C) fast reaction
• D) chain reaction