List of practice Questions

The arrangement of flowers on the flora axis is known as:

Two similar waves ' $x$ ' and ' $y$ ' of amplitude 'a' are moving in the same direction and superimposed. If the wave ' $y$ ' is lagging behind the wave ' $x$ ' by one-fourth of the cycle, then the amplitude of the resultant wave is equal to:

In the circuit shown in the figure, the input voltage $V_i$ is $20V,V_{BE}=0$ and $V_{CE}=0$. The values of $I_B,I_C$ and $\beta$ are given by:

Given the solubility curves of ${\mathrm{KNO}}_3$ and $\mathrm{KCl}$, which of the following statements is not true?

In the presence of a catalyst, the heat evolved or absorbed during the reaction _______.

Why did such a large number of international leaders attend the inauguration? What did it signify the triumph of?

Multiply and express as a mixed fraction :
(a) 3 × 5 \(\frac{1}{5}\)
(b) 5 × 6 \(\frac{3}{4}\)
(c) 7 × 2 \(\frac{1}{4}\)
(d) 4 × 6 \(\frac{1}{3}\)
(e) 3 \(\frac{1}{4}\) × 6
(f) 3 \(\frac{2}{5}\) × 8

The inter-atrial septum in the human heart can be best described as:

Beta-pleated is a secondary structure of the protein. Primary structure folded to form secondary structure. Hydrogen bonds are responsible for the formation of secondary structure. Solve the given question to have a better understanding of the beta-pleated sheet.In $\beta$-pleated secondary protein structure there are:

Which of the following statements is/are correct?a. Genes are thread-like structures in the nucleus of a cell formed of DNA, which carries the chromosomes.b. The dominant gene decides the appearance of an organism even in the presence of an alternative gene.c. The recessive gene decides the appearance of a person in the absence of the dominant gene.

A haem group is a prosthetic group made up of a protoporphyrin ring and a central iron (Fe) atom. Some of the enzymes have haem. Want to know more about it, attempt this question.Which of the following enzymes has/have heme as a prosthetic group?(i) Catalase                            (ii) Carboxypeptidase(iii) Succinic dehydrogenase (iv) Peroxidase

The enthalpy and entropy change for the reaction:${\mathrm{Br}}_2(l)+{\mathrm{Cl}}_2(\mathrm{g})\to 2\mathrm{BrCl}(\mathrm{g})$ are $30\mathrm{kJ}{\mathrm{mol}}^{-1}$ and $105{\mathrm{JK}}^{-1}{\mathrm{mol}}^{-1}$ respectively.The temperature at which the reaction will be in equilibrium is:

The pH of a 10 ml aqueous solution of HCl is 4. The amount of water to be added to this solution in order to change its pH from 4 to 5 is:

A current of $2$ amp when passed for $5$ hours through a molten salt deposits $22.2\mathrm{g}$ of metal of atomic mass $177$. The oxidation state of the metal in the metal salt is:

Ammonia is generally excreted through which of the following?

Sucrose is also called as ____.

Calcium carbonate reacts with aqueous \(HCl\) to give \(CaCl_2 \) and \(CO_2\) according to the reaction, \(CaCO_3 (s) + 2 HCl (aq) → CaCl_2 (aq) + CO_2(g) + H_2O(l)\). What mass of \(CaCO_3\) is required to react completely with \(25 \ mL\) of \(0.75 \ M\) \(HCl\)?

H₀ soil thickness is 10 m and final settlement is 50 mm = total primary consolidation settlement. After 300 days settlement is 10 mm. Additional time for 50% primary consolidation settlement?

The following numbers are obviously not perfect squares. Give reason. 

1. 1057 
2. 23453 
3. 7928 
4. 222222 
5. 64000 
6. 89722 
7. 222000 
8. 505050

What are the different ways in which Tilly’s parents could have reacted to her behaviour? What would you have done if you were in their place?

An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

Let \(f(x) = \frac{(1 - cos 4x)}{x^2}\), if x < 0 and a, if x = 0 and \(\sqrt{\frac{x}{(\sqrt{(16+\sqrt{x})}-4)}}\), if x > 0}. If \(f(x)\) is continuous at x = 0, determine the value of a.

Which of the following having negative skamptam Pore water coefficient?

Evaluate the following using suitable identities: (i) (99)³ (ii) (102)³ (iii) (998)³

Check that the ratio \(\frac{ke^2}{ Gm_e m_p}\) is dimensionless. Look up a Table of Physical Constants and determine the value of this ratio. What does the ratio signify?