List of practice Questions

Which of the following statements about Hammerling’s experiment on Acetabularia is/are correct?
(A) It demonstrates that Acetabularia is a unicellular organism.
(B) It demonstrates the role of cytoplasm in heredity.
(C) It demonstrates the role of nucleus in heredity.
(D) It demonstrates the role of cytoplasm in determining rhizoid shape.
Choose the correct answer from the options given below:
Which of the following statements about seed are correct?
(A) Progeny of nucleus seed is breeder seed.
(B) TZ test is for evaluation of field performance of seed
(C) Seed rate of wheat is 100 kg/ha
(D) Tobacco is the example of smallest seed
Which one of the following varieties is hybrid in rice crop?
Chromosomal aberration in which two breaks occur in a chromosome and the intercalary segment reunites in a reverse order is categorised as:
In which ministry, the Genetic Engineering Appraisal Committee (GEAC) was set up?
Mutation was first discovered by:

Match the following:

IonsProperties
I. Zn2+i. d8 configuration
II. Cu2+ii. Colourless
III. Ni2+iii. µ = 1.73 BM

Codes:

A metalloid is:
A pair of isoelectronic species having a bond order of one is:
For which one of the following mixtures is composition uniform throughout?
From the diagram
Reaction Fig
\( \Delta H \) for the reaction C → A is:
Identify the wrong relation for real gases:
Identify the incorrect statement from the following:
The correct decreasing order of boiling points of hydrogen halides is:
The synthetically produced radioactive noble gas by the collision of \(^{249}_{98}\text{Cf}\) with \(^{48}_{20}\text{Ca}\) is:
The transition element (≈5%) present with lanthanoid metal in Misch metal is:
Which of the following statements related to lanthanoids is incorrect?
For the coagulation of positively charged hydrated ferric-oxide sol, the flocculating power of the ions is in the order:
$NO_2$ gas is :
Select the correct statement:
Which one of the following does not represent the Arrhenius equation?
A current of 3 A is passed through a molten calcium salt for 1 hr 47 min 13 sec. The mass of calcium deposited is:
For the reaction, A ⇌ B, Ea = 50 kJ mol−1 and ΔH = −20 kJ mol−1. When a catalyst is added, Ea decreases by 10 kJ mol−1. What is the Ea for the backward reaction in the presence of catalyst?
For the reaction PCl5​→PCl3​+Cl2​, the rate and rate constant are 1.02×10−4mol L−1s−1 and 3.4×10−5s−1, respectively, at a given instant. The molar concentration of PCl5​ at that instant is:
How many Coulombs are required to oxidise 0.1 mole of H2O to oxygen?