Pollen grains can be stored for several years in liquid nitrogen having a temperature of
- –120°C
- – 196°C
- – 80°C
- – 160°C
The Correct Option is B
Solution and Explanation
Top Questions on Hybridisation
- The change in hybridisation (if any) of the 'Al' atom in the following reaction is
AlCl3 + Cl- → AlCl4-
- KCET - 2025
- Chemistry
- Hybridisation
Concentrated nitric acid is labelled as 75% by mass. The volume in mL of the solution which contains 30 g of nitric acid is:
Given: Density of nitric acid solution is 1.25 g/mL.- JEE Main - 2025
- Chemistry
- Hybridisation
Arrange the following in increasing order of solubility product:
\[ {Ca(OH)}_2, {AgBr}, {PbS}, {HgS} \]- JEE Main - 2025
- Chemistry
- Hybridisation
Match List - I with List - II.
List - I (Saccharides) List - II (Glycosidic linkages found)
(A) Sucrose (I) \( \alpha 1 - 4 \)
(B) Maltose (II) \( \alpha 1 - 4 \) and \( \alpha 1 - 6 \)
(C) Lactose (III) \( \alpha 1 - \beta 2 \)
(D) Amylopectin (IV) \( \beta 1 - 4 \)Choose the correct answer from the options given below:
- JEE Main - 2025
- Chemistry
- Hybridisation
Match List - I with List - II.
List - I (Complex) List - II (Hybridisation) (A) \([\text{CoF}_6]^{3-}\) (I) \( d^2 sp^3 \) (B) \([\text{NiCl}_4]^{2-}\) (II) \( sp^3 \) (C) \([\text{Co(NH}_3)_6]^{3+}\) (III) \( sp^3 d^2 \) (D) \([\text{Ni(CN}_4]^{2-}\) (IV) \( dsp^2 \)
Choose the correct answer from the options given below:- JEE Main - 2025
- Chemistry
- Hybridisation
Questions Asked in NEET exam
- In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x (kcal m-2)yr-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
- NEET (UG) - 2024
- Ecosystems
- Match List I with List II
List-I
(Conversion)List-II
(Shape/geometry)(A) 1 mol of H2O to O2 (I) 3F (B) 1 mol of MnO-4 to Mn2+ (II) 2F (C) 1.5 mol of Ca from molten CaCl2 (III) 1F (D) 1 mol of FeO to Fe2O3 (IV) 5F
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Organic Chemistry- Some Basic Principles and Techniques
- Arrange the following elements in increasing order of electronegativity:
N, O, F, C, Si
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Modern Periodic Law And The Present Form Of The Periodic Table
In the given figure, which component has thin outer walls and highly thickened inner walls?
- NEET (UG) - 2024
- Cell Wall
- If c is the velocity of light in free space, the correct statements about photon among the following are:
A. The energy of a photon is E = hν.
B. The velocity of a photon is c.
C. The momentum of a photon, \(p=\frac{hv}{c}\).
D. In a photon-electron collision, both total energy and total momentum are conserved.
E. Photon possesses positive charge.
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Photon and Matter Waves