Identify the correct order of the size of the following elements:
Identify the correct order of the size of the following elements: Ca, K, Ar,Cl,S
Options
(a) Ca²⁺< K⁺< Ar < Cl⁻ < S²⁻ (b) Ar < Ca²⁺< K⁺< Cl⁻< S²⁻ (c) Ca²⁺< Ar […]
AIPMT2007
In which of the following pairs, the two species are iso-structure?
In which of the following pairs, the two species are iso-structure?
Options
(a) SO₃²⁻ and NO₃⁻ (b) BF₃ and NF₃ (c) BrO₃⁻ and XeO₃ (d) SF₄ and XeF₄
Correct Answer:
BrO₃⁻ and XeO₃
Which of the following electronic configuration an atom has the lowest ionisation
Which of the following electronic configuration an atom has the lowest ionisation enthalpy?
Options
(a) 1s²2s²sp³ (b) 1s²2s²2p⁵3s¹ (c) 1s²2s²2p⁶ (d) 1s²2s²2p⁵
Correct Answer:
1s²2s²2p⁵3s¹
Explanation:
No explanation available. Be the first to write […]
The number of moles of KMnO₄ that will be needed to react with one mole of
The number of moles of KMnO₄ that will be needed to react with one mole of sulphite ion in acidic solution is
Options
(a) 4/5 (b) 2/5 (c) 1 (d) 3/5
Correct Answer:
2/5
IF A⃗ and B⃗ are two vectors and θ is the angle between them
If A and B are two vectors and θ is the angle between them, if (A x B) = √3 (A. B), the value of θ is
Options
(a) 45° (b) 30° (c) 90° […]
Probiotics are
Probiotics are
Options
(a) cancer inducing microbes (b) new kind of food allergens (c) live microbial food supplement (d) safe antibiotics
Correct Answer:
live microbial food supplement
Explanation:
No explanation available. Be the […]
Gel electrophoresis is used for
Gel electrophoresis is used for
Options
(a) cutting of DNA into fragments (b) separation of DNA fragments according to their size (c) construction of recombinant DNA by joining with cloning vectors (d) isolation […]
Bowman’s glands are located in the
Bowman’s glands are located in the
Options
(a) anterior pituitary (b) female reproductive system of cockroach (c) olfactory epithelium of our nose (d) proximal end of uriniferous tubules.
Correct Answer:
olfactory epithelium of our […]
What is common to whale, seal and shark?
What is common to whale, seal and shark?
Options
(a) Thick subcutaneous fat (b) Convergent evolution (c) Homoiothermy (d) Seasonal migration
Correct Answer:
Convergent evolution
Explanation:
No explanation available. Be the first to […]
In gymnosperms, the pollen chamber represents
In gymnosperms, the pollen chamber represents
Options
(a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the […]