Q:

Which of the following is the strongest base?

A) LiCH3	B) LiF
C) LiOH	D) LiNH2

Answer & Explanation Answer: A) LiCH3

Explanation:

The stability of the ions is determined by the energy of the lone pairs. Carbon has the least effective nuclear charge (Zeff) and so the lone pair on the CH3− ion has the highest energy, making it the least stable ion and so the strongest base. The Zeff increases as we move across the period until we get to fluorine which has the greatest Zeff and so its lone pairs have the lowest energy, making F− the least basic ion.

In order of decreasing basicity they are ranked LiCH3 > LiNH2 > LiOH > LiF. We are dealing with the ions F−, OH−, NH2− and CH3− and so the factor which influences their basicity is the stability of the ion compared to its conjugate acid.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: GATE , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

2 7849

Q:

Which one of the following is the longest National Highway in India?

A) NH2	B) NH5
C) NH7	D) NH8

Answer & Explanation Answer: C) NH7

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

92 7845

Q:

Consider the following statements about Sikh Gurus:
1. Banda Bahadur was appointed as the military leader of the Sikhs by Guru Tegh Bahadur.
2. Guru Arjan Dev become the Sikh Guru after Guru Ram Das.
3. Guru Arjan Dev gave to Sikhs their own script- Gurumukhi.
Which of the statements given is/are correct?

A) 1 only	B) 2 and 3
C) 1 and 3	D) 1 and 2

Answer & Explanation Answer: D) 1 and 2

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian Culture

122 7840

Q:

Madhubani painting is famous in which of the following state?

A) Uttar Pradesh	B) Kerala
C) Bihar	D) Tamil Naidu

Answer & Explanation Answer: C) Bihar

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian Culture

54 7838

Q:

The Satpura range situated between two west flowing rivers. They are

A) Narmada and Luni	B) Narmada and Tapi
C) Tapi and Mahi	D) Mahi and Luni

Answer & Explanation Answer: B) Narmada and Tapi

Explanation:

Aravalli seperates the valleys of Luni and Mahi while Vindhyas seperate the valleys of Mahi and Narmada

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

13 7833

Q:

The doctrine of three jewels- Right belief, Right conduct and Right Knowledge- is the crownings glory of

A) Buddhism	B) Christianity
C) Jainism	D) None of these

Answer & Explanation Answer: C) Jainism

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian History

11 7830

Q:

Which reforms act had created the office of the secretary of State for India?

A) Montague-Chelmsford Reforms	B) The Government of India Act, 1858
C) The Indian Councils Act,1861	D) Minto-Morley Reforms,1908

Answer & Explanation Answer: B) The Government of India Act, 1858

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian History

3 7829

Q:

In which of the following mammals estrous cycle is absent ?

A) Rabbit	B) Horse
C) Cow	D) Monkey

Questions

Quick Links