In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.

Below are given two sets, Set - I which gives modalities of operant conditioning and Set - II which provides the types of reinforcement, the types of responses (responses made or withheld) and the presence or absence of cue. Match the two sets and indicate your answer by choosing from the code : Set - I (Modalities of operant conditioning procedures) Set – II (Conditions and contexts) (a) Reward training (i) Positive reinforcement, response made, with cue present (b) Escape training (ii) Positive reinforcement, response withheld with cue absent (c) Discriminated omission training (iii) Positive reinforcement, response made with cue absent (d) Active avoidance (iv) Negative reinforcement, response made with training (e) Punishment training (v) Positive reinforcement, response withheld with cue present (vi) Negative reinforcement, response withheld with cue absent

A

(a) - (iii), (b) - (iv), (c) - (v), (d) - (i) - (e) - (vi)

B

(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) - (e) - (v)

C

(a) - (ii), (b) - (iii), (c) - (iv), (d) - (v) - (e) - (vi)

D

(a) - (i), (b) - (iii), (c) - (iv), (d) - (v) - (e) - (vi)

For the reaction, A = X + Y, the respective concentrations are C_A, C_X and C_Y. The forward reaction rate constant is kf and the backward reaction rate constant is kb. Choose the correct statement from the following:
P. At equilibrium, kf C_A > k_B CxCy
Q. If the reaction is irreversible than, kb C_XC_Y = 0
R. The backward reaction rate will essentially be first order, if the forward reaction rate is first order.
S. Activation energy for the first order forward reaction will be independent of temperature.

A

P, Q

B

Q, R

C

R, S

D

Q, S

A word arrangement machine, When given an input line of words, rearranges it in every step following a certain rule. Following is an illustration of an input line of words and various steps of rearrangement.
Input: gone are take enough brought station
Step 1: take gone are enough brought station
Step 2: take are gone enough brought station
Step 3: take are station gone enough brought
Step 4: take are station brought gone enough
And Step 4 is the last step for this input. Now, find out an appropriate step in the following question following the above rule. Question:
Input: car on star quick demand fat
What will be the third step for this input ?

A

star car demand quick on fat

B

star quick car demand on fat

C

star car quick demand on fat

D

none of these

An electronic device when fed with the numbers, rearranges them in a particular order following certain rules. The following is a step-by-step process of rearrangement for the given input of numbers. Input :- 85 16 36 04 19 97 63 09 Step I :- 97 85 16 36 04 19 63 09 Step II :- 97 85 63 16 36 04 19 09 Step III :- 97 85 63 36 16 04 19 09 Step IV :- 97 85 63 36 19 16 04 09 Step V :- 97 85 63 36 19 16 09 04 (for the given input step V is the last step). Which of the following will be the last step for the given input ? Input :- 03 31 43 22 11 09

A

IV

B

V

C

VI

D

None of these

One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output’s relation with the inputs?

A

The exclusive-OR output is a 20 s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses

B

The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses

C

The exclusive-OR output is a 15 s pulse followed by a 40 s pulse

D

The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, followed by a 40 s pulse

Following table represents the type of reactions of three metals with various solutions. Metal lron (II) Sulphate Copper (II) Sulphate Zinc Sulphate A No reaction Displacement Not known B No reaction No reaction No reaction C Displacement Not known No reaction Which of the following represents the correct order of reactivity of metals A, B, C

A

C > A > B

B

B > C > A

C

B > A > C

D

A > C > B

A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

A

Siloxane elastomers

B

Polyamides

C

Vinyl polymers

D

Urea-formaldehyde resins

For a reaction, the extent of reaction equation is Ni = Nio + ϒVi is Where: Ni = Moles of species I present in the system after the reaction occurs Nio = Moles of species I present in the system when the reaction starts Vi = Stoichiometric coefficient for species i in the specified chemical reaction equation ϒ = Extent of reaction

A

Correct

B

Incorrect

C

Some of the terms are defined wrong

D

None of the mentioned

Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is

A

0

B

1

C

2

D

3

In the reaction,
Basics of Organic Reaction Mechanism mcq question image

if the concentration of both the reagents is doubled then the rate of the reaction will

A

remain unchanged

B

quadruple

C

reduce to one fourth

D

double

In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.

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