Q. Which of the following microbes is used in the production of biofertilizers? (2022)
A.
Rhizobium
B.
Streptococcus
C.
Clostridium
D.
Bacillus cereus
Show solution
Solution
Rhizobium is a bacterium that forms symbiotic relationships with legumes and is used in biofertilizers for nitrogen fixation.
Correct Answer: A — Rhizobium
Learn More →
Q. Which of the following microbes is used in the production of biofuels? (2023)
A.
Bacteria
B.
Viruses
C.
Fungi
D.
All of the above
Show solution
Solution
Bacteria are commonly used in the production of biofuels through fermentation processes.
Correct Answer: A — Bacteria
Learn More →
Q. Which of the following microbes is used in the production of yogurt? (2021)
A.
Lactobacillus
B.
Escherichia coli
C.
Staphylococcus
D.
Bacillus subtilis
Show solution
Solution
Lactobacillus is the primary bacterium used in the fermentation of milk to produce yogurt.
Correct Answer: A — Lactobacillus
Learn More →
Q. Which of the following molecular orbitals is filled first according to the Aufbau principle?
A.
σ1s
B.
σ*1s
C.
π2p
D.
σ2p
Show solution
Solution
According to the Aufbau principle, the σ1s molecular orbital is filled first as it has the lowest energy.
Correct Answer: A — σ1s
Learn More →
Q. Which of the following molecular orbitals is lower in energy than the 2p atomic orbitals?
A.
σ2s
B.
σ*2s
C.
π2p
D.
σ2p
Show solution
Solution
σ2s is lower in energy than the 2p atomic orbitals.
Correct Answer: A — σ2s
Learn More →
Q. Which of the following molecules exhibits resonance?
A.
H2O
B.
CO2
C.
O3
D.
CH4
Show solution
Solution
Ozone (O3) exhibits resonance due to the delocalization of electrons.
Correct Answer: C — O3
Learn More →
Q. Which of the following molecules has a bent shape according to VSEPR theory?
A.
CO2
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
H2O has two bonding pairs and two lone pairs, leading to a bent molecular geometry.
Correct Answer: B — H2O
Learn More →
Q. Which of the following molecules has a bent shape?
A.
CO2
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
H2O has two bonding pairs and two lone pairs, leading to a bent molecular geometry.
Correct Answer: B — H2O
Learn More →
Q. Which of the following molecules has a bond order of 1?
A.
H2
B.
He2
C.
Li2
D.
B2
Show solution
Solution
Li2 has a bond order of 1, calculated as (2 bonding electrons - 0 antibonding electrons)/2 = 1.
Correct Answer: C — Li2
Learn More →
Q. Which of the following molecules has a bond order of 2?
Show solution
Solution
N2 has a bond order of 2, calculated as (number of bonding electrons - number of antibonding electrons)/2 = (10-6)/2 = 2.
Correct Answer: B — N2
Learn More →
Q. Which of the following molecules has a higher bond order than N2?
Show solution
Solution
O2 has a bond order of 2, while N2 has a bond order of 3, so none have a higher bond order than N2.
Correct Answer: A — O2
Learn More →
Q. Which of the following molecules has a higher bond order: N2 or O2?
A.
N2
B.
O2
C.
Both are equal
D.
Cannot be determined
Show solution
Solution
N2 has a bond order of 3, while O2 has a bond order of 2, so N2 has a higher bond order.
Correct Answer: A — N2
Learn More →
Q. Which of the following molecules has a linear shape?
A.
CH4
B.
H2O
C.
CO2
D.
NH3
Show solution
Solution
CO2 has a linear shape due to the arrangement of its double bonds.
Correct Answer: C — CO2
Learn More →
Q. Which of the following molecules has a polar covalent bond? (2023)
A.
Cl2
B.
H2O
C.
CH4
D.
O2
Show solution
Solution
Water (H2O) has a polar covalent bond due to the difference in electronegativity between hydrogen and oxygen.
Correct Answer: B — H2O
Learn More →
Q. Which of the following molecules has a polar covalent bond? (2023) 2023
A.
Cl2
B.
H2O
C.
CH4
D.
O2
Show solution
Solution
Water (H2O) has a polar covalent bond due to the difference in electronegativity between hydrogen and oxygen.
Correct Answer: B — H2O
Learn More →
Q. Which of the following molecules has a trigonal bipyramidal geometry?
A.
NH3
B.
PCl5
C.
H2O
D.
CO2
Show solution
Solution
PCl5 has five bonding pairs and no lone pairs, leading to a trigonal bipyramidal geometry.
Correct Answer: B — PCl5
Learn More →
Q. Which of the following molecules has a triple bond?
Show solution
Solution
N2 has a triple bond, consisting of one sigma bond and two pi bonds.
Correct Answer: A — N2
Learn More →
Q. Which of the following molecules has the highest bond order?
Show solution
Solution
N2 has the highest bond order of 3, calculated as (10 bonding electrons - 2 antibonding electrons)/2 = 3.
Correct Answer: A — N2
Learn More →
Q. Which of the following molecules is diamagnetic?
Show solution
Solution
F2 is diamagnetic as it has all electrons paired in its molecular orbitals.
Correct Answer: C — F2
Learn More →
Q. Which of the following molecules is isoelectronic with N2?
Show solution
Solution
C2 is isoelectronic with N2, both having 10 electrons.
Correct Answer: B — C2
Learn More →
Q. Which of the following molecules is isoelectronic with Ne?
Show solution
Solution
N2 is isoelectronic with Ne, both having 10 electrons.
Correct Answer: C — N2
Learn More →
Q. Which of the following molecules is polar?
A.
CCl4
B.
CO2
C.
NH3
D.
CH4
Show solution
Solution
Ammonia (NH3) is polar due to its trigonal pyramidal shape and the presence of a lone pair on nitrogen.
Correct Answer: C — NH3
Learn More →
Q. Which of the following molecules is predicted to be stable according to molecular orbital theory?
A.
He2
B.
Li2
C.
Be2
D.
B2
Show solution
Solution
Li2 is stable with a bond order of 1, while He2 and Be2 are not stable.
Correct Answer: B — Li2
Learn More →
Q. Which of the following mountain ranges is known as the 'Roof of the World'?
A.
Himalayas
B.
Andes
C.
Tian Shan
D.
Rockies
Show solution
Solution
The Tian Shan mountain range is often referred to as the 'Roof of the World' due to its high peaks and extensive range.
Correct Answer: C — Tian Shan
Learn More →
Q. Which of the following movements aimed at alleviating poverty and improving the socio-economic conditions of the rural poor in India post-independence? (1960)
A.
A. Green Revolution
B.
B. Non-Aligned Movement
C.
C. Quit India Movement
D.
D. Civil Disobedience Movement
Show solution
Solution
The Green Revolution aimed to increase agricultural productivity, which was crucial for improving the socio-economic conditions of the rural poor.
Correct Answer: A — A. Green Revolution
Learn More →
Q. Which of the following movements aimed at the social upliftment of the marginalized sections of society in India during the 19th century? (1925)
A.
Brahmo Samaj
B.
Ramakrishna Mission
C.
Self-Respect Movement
D.
Indian National Congress
Show solution
Solution
The Self-Respect Movement, founded by E.V. Ramasamy (Periyar), aimed at promoting social equality and the rights of the marginalized, particularly the lower castes, in the 19th century.
Correct Answer: C — Self-Respect Movement
Learn More →
Q. Which of the following movements aimed at the upliftment of women in India during the 19th century?
A.
The Arya Samaj.
B.
The Aligarh Movement.
C.
The Brahmo Samaj.
D.
The Khilafat Movement.
Show solution
Solution
The Brahmo Samaj, founded by Raja Ram Mohan Roy, focused on social reforms including women's rights and education.
Correct Answer: C — The Brahmo Samaj.
Learn More →
Q. Which of the following movements in India was primarily focused on environmental conservation and the rights of local communities? (1970)
A.
A. The Chipko Movement
B.
B. The Green Revolution
C.
C. The Non-Cooperation Movement
D.
D. The Swadeshi Movement
Show solution
Solution
The Chipko Movement, which began in the 1970s, focused on environmental conservation by encouraging people to hug trees to prevent deforestation and protect local ecosystems.
Correct Answer: A — A. The Chipko Movement
Learn More →
Q. Which of the following movements in India was significantly supported by NGOs in the late 20th century? (2005)
A.
The Green Revolution.
B.
The Right to Information Movement.
C.
The Non-Cooperation Movement.
D.
The Quit India Movement.
Show solution
Solution
The Right to Information Movement in India received significant support from NGOs, which advocated for transparency and accountability in governance.
Correct Answer: B — The Right to Information Movement.
Learn More →
Q. Which of the following movements in modern Indian history aimed at the economic upliftment of the marginalized sections of society? (1951)
A.
Non-Cooperation Movement
B.
Civil Disobedience Movement
C.
Bhoodan Movement
D.
Swadeshi Movement
Show solution
Solution
The Bhoodan Movement, initiated by Vinoba Bhave, aimed at land reform and the redistribution of land to the landless, promoting inclusive growth.
Correct Answer: C — Bhoodan Movement
Learn More →
Showing 18151 to 18180 of 19578 (653 Pages)