In the TOF analyzer, all the ions are accelerated at the same velocity.

The ions created in ESI are accelerated towards mass analyzer depending upon which criteria of ions?

A

Mass of the ion

B

Charge on the ion

C

Weight of the ion

D

Mass and charge of the ion

In TOF, ions of lower mass are accelerated to lower velocities and reach the detector last.

A

True

B

False

A lexical analyzer uses the following patterns to recognize three tokens T1, T2, and T3 over the alphabet {a,b,c}. ?1: ?? (?|?)∗? ?2: ?? (?|?)∗? ?3: ?? (?|?)∗? Note that ‘x?’ means 0 or 1 occurrence of the symbol x. Note also that the analyzer outputs the token that matches the longest possible prefix. If the string ???????? is processed by the analyzer, which one of the following is the sequence of tokens it outputs?

A

𝑇₁𝑇₂𝑇₃

B

𝑇₁𝑇₁𝑇₃

C

𝑇₂𝑇₁𝑇₃

D

𝑇₃𝑇₃

What is the relation of time of flight with the molecular mass of the ion in the TOF mass analyzer?

A

Time of flight is inversely proportional to the square root of the molecular mass of the ion

B

Time of flight is inversely proportional to the molecular mass of the ion

C

Time of flight is directly proportional to the molecular mass of the ion

D

Time of flight is directly proportional to the square root of the molecular mass of the ion

Which of the following statements is/are true/false? A. An acid which is completely ionized into ions and produces a large number of H+ ions. For example HCl, H2 SO4, HNO3 B. An acid which is partially ionized in water and produces less number of H+ ions. For example CH3COOH, H2CO3, H2SO2

A

Both A and B are true

B

Only B is true

C

Both A and B are false

D

Only A is true

Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH- ions. III. Bases are bitter in taste and generate OH- ions.

A

Only I and III

B

Only I and II

C

Only II and III

D

All I, II and III

Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.

A

Only I and III

B

Only I and II

C

Only II and III

D

All I, II and III

Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H⁺ ions. for example HCl, H2SO₄, HNO₃
2. A weak acid that is partially ionized in water produces small amounts of H⁺ ions. for example - CH₃COOH, H₂CO₃, H₂SO₃

A

Only 2 is correct

B

Both 1 and 2 are correct

C

Both 1 and 2 are incorrect

D

Only 1 is correct

Read the given statements and conclusion carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which tof the given conclusions logically follow(s) from the statements. Statements: 1. Some cars are buses. 2. Some buses are trucks 3. Some trucks are scooters Conclusions: I. Some cars are scooters. II. Some trucks are buses. III. Some scooters are buses. IV. All scooters are trucks.

A

Only conclusions II and IV follow.

B

Only conclusions I and II follow.

C

Only conclusion II follows

D

All the conclusions follow

Which of the following type of mass analyzer accelerates charged ions along a long tube known as flight tube?

A

Ion trap mass analyzer

B

Quadrupole mass analyzer

C

Orbitrap

D

TOF

In the TOF analyzer, all the ions are accelerated at the same velocity.

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