In the figure, there are angles and they are , and A) 3, ∠ABC, ∠DBC, ∠ABD B) 3, ∠BDA, ∠ABC, ∠BCD C) 3, ∠CAB, ∠BDA, ∠BCD D) 3, ∠ACB, ∠BDA, ∠BCD

Extending the same logic you've seen in the video so far, find out the sum of the first 10 natural numbers. (You can use $S_{10}=1+2+3+\ldots+10$ and proceed)

A $10 \times 11$
B $\frac{(10 \times 11)}{2}$
C $\frac{(10 \times 2)}{11}$
D None of these

An image that cannot be obtained on a screen is called a ________ image.

Option 1) Real Option 2) Mirror Option 3) Wrong Option 4) Virtual

During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:

(a) chromium, (b) tin, (c) zinc, or (d) copper.

Which among the following is true about the Sepoy Mutiny?

Option 1: The British hurt the religious sentiments of the Indian soldiers. Option 2: Cow fat was used as artillery grease. Option 3: Pig fat was used as artillery grease. Option 4: All of the above.

A bottle kept on a table started leaking when two holes were made at the same level. This is because:

• The liquid inside the bottle is exerting equal pressure in all directions at the same level

• The liquid inside is not exerting any pressure on the bottle

• The liquid is exerting unequal pressure in all directions at the same level

• Can't be said

A sample has 0.1 moles of $\mathrm{H}{2}$ gas. If $3.011 \times 10^{23}$ molecules are added to it, what is the final number of moles of $\mathrm{H}{2}$ in the sample?

$\mathrm{C}^{-4}$ is unstable because it would be very difficult for 6 protons to hold 10 electrons.
A. True
B. False

Which of the electrodes is at a higher potential in a voltaic cell using copper and zinc rods as electrodes and dilute $\mathrm{H}{2}\mathrm{SO}{4}$ as an electrolyte?

A. Copper
B. Zinc
C. Both are at the same potential
D. It depends on the concentration of $\mathrm{H}{2}\mathrm{SO}{4}$

If a + b + c = 0, then the quadratic equation 3ax^2 + 2bx + c = 0 has:

• at least one root in (0,1)
• one root in (2,3) and the other in (-2,-1)
• Imaginary roots
• None of these

The density of ice is lower than that of the water.

A rod of length $L$ and uniform cross-sectional area has varying thermal conductivity which changes linearly from $2 K$ at end $B$ to $K$ at the other end $A. The ends $A$ and $B$ of the rod are maintained at constant temperatures of $100^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$, respectively. At steady state, the graph of temperature $T=T(x)$ where $x$ is the distance from end $A$ will be.

Which of the following is/are the uses of fresh water?

• Drinking
• Bathing
• Cooking
• All of the above

Add -500 and -1000 - 500.

Identify the common gender noun in the sentence below: Nita and Kirti had an appointment with the stylist in the evening.

• Nita
• Stylist
• Kirti
• Appointment

Which among the following is not a natural resource?

Option 1) Soil
Option 2) Water
Option 3) Electricity
Option 4) Coal

Give some examples of primary cells.

Distinguish between constipation and indigestion. Mention their major causes.

Why can't we see in the dark?

• Option 1) Our eyes respond only to sunlight

• Option 2) There is no light to reflect from the objects

• Option 3) Power of eye is reduced

• Option 4) Objects absorb all the light in the dark

There is a football field. Its four corner flags are kept in position. A corner flag is shown in the image. Is the quadrilateral representing the field defined? Why?