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Question : The diameters of the two circles are 12 cm and 20 cm, respectively and the distance between their centres is 16 cm. Find the number of common tangents to the circles.
Option 1: 2
Option 2: 3
Option 3: 1
Option 4: 4
Correct Answer: 3
Solution : The diameters of the two circles are 12 cm and 20 cm. The distance between their centres is 16 cm. According to the diagram, The two circles are touching each other externally. So, the number of common tangents will be 3. Hence, the correct answer
Question : How many medals in total did India win at the Summer Olympic Games in 2012?
Option 2: 6
Option 3: 3
Correct Answer: 6
Solution : The correct answer is 6.
India's 2012 Summer Olympics marked a historic achievement, doubling its previous record with a total of six medals, including two silver and four bronze. Notably, the nation's first female athletes to secure Olympic medals in the same Games were
Question : Find the value of $\cos 0^{\circ}+\cos 30^{\circ}-\tan 45^{\circ}+\operatorname{cosec} 60^{\circ}+\cot 90^{\circ}$.
Option 1: $\frac{7}{6 \sqrt{3}}$
Option 2: $\frac{\sqrt{3}}{6}$
Option 3: $\frac{7}{6}$
Option 4: $\frac{7}{2 \sqrt{3}}$
Correct Answer: $\frac{7}{2 \sqrt{3}}$
Solution : $\cos 0^{\circ}+\cos 30^{\circ}-\tan 45^{\circ}+\operatorname{cosec} 60^{\circ}+\cot 90^{\circ}$ = $1+\frac{\sqrt{3}}{2}-1+\frac{2}{\sqrt{3}}+0$ = $\frac{\sqrt{3}}{2}+\frac{2}{\sqrt{3}}$ = $\frac{3+4}{2\sqrt{3}}$ = $\frac{7}{2 \sqrt{3}}$ Hence, the correct answer is $\frac{7}{2 \sqrt{3}}$.
Question : Select the most appropriate option to substitute the underlined segment in the given sentence.
After a prolonged discussion, Gayatri got a permission from her parents to study law.
Option 1: got the permission
Option 2: got proper permission
Option 3: got permission
Option 4: got her permission
Correct Answer: got permission
Solution : The correct choice is the third option.
The original sentence contains an unnecessary article "a" before "permission". In English, when referring to the concept of permission, the noun "permission" is typically used without an article, as it is not a countable
Question : The SI (International System of Units) unit of length is______.
Option 1: metre
Option 2: centimetre
Option 3: millimetre
Option 4: kilometre
Correct Answer: metre
Solution : The correct answer is metre.
The metre is the unit of length in the SI (International System of Units). The most widely used measurement system is the International System of Units (SI), which is the current equivalent of the metric system based on the
Question : Heat resistant variety of Glass is ____.
Option 1: Pyrex glass
Option 2: Haed glass
Option 3: Flint glass
Option 4: None of these
Correct Answer: Pyrex glass
Solution : The correct answer is Pyrex glass.
Glasses are formed of silica. Although glass do not have any sharp melting point but it melts slowly because of heat. Because of this phenomenon glasses of windows become thick at bottom and thin at upper portion. Pyrex
Question : The curved surface area of a cone whose base radius is 7 cm and slant height is 10 cm is:
Option 1: 280 cm2
Option 2: 250 cm2
Option 3: 300 cm2
Option 4: 220 cm2
Correct Answer: 220 cm2
Solution : Give: Radius = 7 cm Slant height = 10 cm The curved surface area of a cone = $\pi rl$ = $\frac{22}{7}\times7\times10$ = 220 cm2 Hence, the correct answer is 220 cm2.
Question : Which of the following Mughal rulers is believed to have ruled under the influence of his father-in-law, Itimad-ud-Daulah?
Option 1: Bahadur Shah II
Option 2: Jahangir
Option 3: Humayun
Option 4: Shah Alam I
Correct Answer: Jahangir
Solution : The correct answer is Jahangir.
Ghiyas Beg was a merchant from Iran. He was the father of Nur Jahan. Ghiyas Beg was appointed chief minister, or Wazir, by Jahangir upon his coronation as Mughal emperor. Jahangir gave his father-in-law the title of Itimad-ud-Daulah, or
Question : The seventy-third Amendment Act,1992 of the Indian Constitution was passed to
Option 1: strengthen Panchayati Raj
Option 2: strengthen rural institution
Option 3: strengthen urban institution
Option 4: None of the above
Correct Answer: strengthen Panchayati Raj
Solution : The correct answer is strengthen Panchayati Raj.
The Indian Constitution's Seventy-Third Amendment Act of 1992 was passed to strengthen local self-governance in rural India. It established Panchayati Raj Institutions (PRIs), which include Gram Panchayats, Panchayat Samitis, and Zila Parishads and gave them the
Question : In $\Delta \mathrm{ABC}$, a line parallel to side $\mathrm{BC}$ cuts the sides $\mathrm{AB}$ and $\mathrm{AC}$ at points $\mathrm{D}$ and $\mathrm{E}$ respectively and also point $\mathrm{D}$ divides $\mathrm{AB}$ in the ratio of $\mathrm{1 : 4}$. If the area of $\Delta \mathrm{ABC}$ is $200\;\mathrm{cm^2}$, then what is the area (in $\mathrm{cm^2}$) of quadrilateral $\mathrm{DECB}$?
Option 1: 192
Option 2: 50
Option 3: 120
Option 4: 96
Correct Answer: 192
Solution : Given: $\mathrm{AD:DB=1:4}$ and the area of $\Delta \mathrm{ABC}$ is $200\;\mathrm{cm^2}$. In $\Delta \mathrm{ABC}$, $\mathrm{DE}\parallel\mathrm{BC}$ So, $\Delta \mathrm{ADE}\sim\Delta \mathrm{ABC}$, The ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. ⇒ $\frac{\text{Area of $\Delta \mathrm{ADE}$}}{{\text{Area of
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