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
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
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
- In which of the following set, both the substances have same hybridisation?
- AP EAPCET - 2025
- Chemistry
- 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
Questions Asked in NEET exam
- Two identical point masses P and Q, suspended from two separate massless springs of spring constants \(k_1\) and \(k_2\), respectively, oscillate vertically. If their maximum velocities are the same, the ratio of the amplitude of P to the amplitude of Q is :
- NEET (UG) - 2025
- Waves and Oscillations
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
- A microscope has an objective of focal length \(f_o = 2\) cm and an eyepiece of focal length \(f_e = 4\) cm. The tube length of the microscope is \(L = 40\) cm. If the distance of distinct vision of eye is \(D = 25\) cm, the magnification in the microscope is:
- NEET (UG) - 2025
- Optical Instruments
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
- NEET (UG) - 2025
- Electromagnetic Induction and Inductance
- Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?
- NEET (UG) - 2025
- Genetics