List of practice Questions

Identify A, B, and C in the given Hatch and Slack pathway diagram:


 

In the Calvin cycle, the ratio of trioses formed, net gain, and used to regenerate RUBP is:
The equation of the circle of radius 3 units which touches the circles $ x^2 + y^2 - 6|x| = 0 $ is:
Identify enzyme "X" in the reaction \( {CO}_2 + {H}_2{O} \xrightarrow{{X}} {H}_2{CO}_3 \):
An aqueous HCl solution has the pH = 5. If 1 ml of this solution is being diluted to 1 L, then predict the pH of the resulting solution.
1 molal NaCl solution has the density 1.21 gm/cc. Find the molar concentration of the same solution.
At 30°C, a substance being dissolved in CCl$_4$ (solvent) exhibits its dissociation half-life as 2.5 hrs. If 256 g of the substance is taken initially, then tell how much of it will remain as such after 20 hrs.
At 12°C and 756 mm atmospheric pressure, a balloon contains 450 ml air. If the balloon is shifted to a place of temperature 5°C and atmospheric pressure 765 mm, then indicate the nature (shape) and degree (volume) of change of the balloon.
First ionisation potential energy of Li(m) is 520 kJ/mol$^{-1}$, hence calculate the energy required to convert Li-atoms present in 70 mg Li(m) into Li$^+$ ion.
In HF molecule, internuclear distance is 0.92 Å and dipole moment approximates 2 D. Estimate the percentage ionic character of HF molecule.
In solid state, nitrogen exists in two different allotropic forms ($\alpha$ and $\beta$). Give an idea regarding their shapes and stability.
How would you differentiate between $ \text{O}_3 $ and $ \text{H}_2\text{O}_2 $ (chemically)?

Identify the product(s) of the following two reactions (i) and (ii):

Write the end product of the following reaction:

Ascertain the products $B_1$ and $C_1$ of the following reaction:

Analyzing the following reaction, ascertain the final product:

In aqueous medium, cations like $ \text{H}^+ $ and $ \text{Li}^+ $ undergo hydration and exist in the hydrated form. Predict the numbers of water molecules surrounded with $ \text{H}^+ $ and $ \text{Li}^+ $ ions to form stable complex structure respectively.
Upon addition of phenolphthalein to the aqueous solution of borax, pink colour generates i.e. solution becomes pink. At this stage, if glycerol is being added to the pink coloured solution, it turns colourless. Highlight the phenomenon.
1 mole gas at standard pressure and at 27°C temperature is heated such that its volume and pressure both become doubled. The final temperature will be


An ideal monatomic gas follows the ABCDA path in the adjoining P-V diagram. The work done by the gas will be

The radius of curvature of a convex mirror is 40 cm and the object size is double that of image size. The image distance will be
If the refractive index of the material of an equilateral prism is $ \sqrt{3} $, the minimum angle of deviation will be
Both sides of a convex lens have radius of curvature 40 cm and the refractive index of its glass is 1.5. The focal length of the lens is
A uniform meter-scale is bent at the middle to form a perfect rectangle. Now the distance of the centre of gravity of this rectangle from middle of the scale will be
Material in earth and moon is same but radius of earth is 10 times that of moon and acceleration due to gravity in earth is 6.4 times that in moon. Then the ratio of escape velocity in earth and in moon will be