Memory Based Questions
Q.1Q. The correct order of melting point of 14 group element is ( $K$ )
$1 \quad \mathrm{C}>\mathrm{Si}>\mathrm{Ge}>\mathrm{Sn}>\mathrm{Pb}$
$2 \quad \mathrm{Si}>\mathrm{C}>\mathrm{Ge}>\mathrm{Sn}>\mathrm{Pb}$
$3 \quad \mathrm{Ge}>\mathrm{Sn}>\mathrm{C}>\mathrm{Si}>\mathrm{Pb}$
$4 \quad \mathrm{C}>\mathrm{Si}>\mathrm{Ge}>\mathrm{Pb}>\mathrm{Sn}$
Q.2What will be effect on pH of water when it is heated
1 Increase
2 Decrease
3 Remains same
$4 \quad \mathrm{pH}$ first increases then decreases
Q.3If a square is divided in $4 \times 4$ squares. If two squares are chosen randomly then the probability that the squares doesn't share common side is
1)$3 / 5$
2)$4 / 5$
3)$3 / 20$
4)$7 / 10$
Q.4If angle of prism $=$ angle of min deviation. Given $\mu=\sqrt{3}$, then angle of prism?
Q.5 $\quad \alpha$-helix protein and $\beta$-pleated sheet protein belong from which of the following structure?
1 Primary
2 Secondary
3 Tertiary
4 Quarternary
Q.6Q: A projective is projected at an angle of Go with horizontal with K.E $\rightarrow$ K.
then find K.E. at $H_{\max }$
Q.7Q1 In $4 \times 4$ board, find probability of choosing two blocks having no same side.
Q.8 There are 5 boys and 4 girls. The sum of number of ways to sit them such that together and number of ways such that no boys sit together is equal to
Q.9 Q. In a series $L C R$ circuit, inductance $L=100 \mathrm{mH}$ and capacitance $C=10 \mathrm{nF}$. The angular frequency of the source when current has maximum amplitude in the circuit is
$1 \quad \frac{10^4}{2 \pi} \mathrm{rad} / \mathrm{s}$
$2 \quad \frac{10^5}{2 \pi} \mathrm{rad} / \mathrm{s}$
$3 \quad 10^5 \mathrm{rad} / \mathrm{s}$
$4 \quad 10^6 \mathrm{rad} / \mathrm{s}$
Q.10Let S be the region consisting of points $(\mathrm{x}, \mathrm{y})$ such that $-1 \leq x \leq 1 \& 0 \leq y \leq a+e^{k \mid x}-e^{-x_1}$ if area bounded by region is $\frac{e^2+8 e+1}{e}$ find " $a$ ".
Q.11The correct order of melting point of 14 group element is $(\mathrm{K})$
(1) $\mathrm{C}>\mathrm{Si}>\mathrm{Ge}>\mathrm{Sn}>\mathrm{Pb}$
(2) $\mathrm{Si}>\mathrm{C}>\mathrm{Ge}>\mathrm{Sn}>\mathrm{Pb}$
(3) $\mathrm{Ge}>\mathrm{Sn}>\mathrm{C}>\mathrm{Si}>\mathrm{Pb}$
(4) $\mathrm{C}>\mathrm{Si}>\mathrm{Ge}>\mathrm{Pb}>\mathrm{Sn}$
Q.12The atomic number of the element with least melting point in group 14?
1)6
2)14
3)50
4)85
Q13A satellite is nine times closer to earth compared to moon. Time period of moon is 27 days then period of satellite is
1)3 days
2)9 days
3)1 days
4)$3 \sqrt{3}$ days
Q.14 Let $f(x)=6+16 \cos \left(\frac{\pi}{3}-x\right) \cos \left(\frac{\pi}{3}+x\right) \cos x \sin 3 x \cos 6 x$ if range of $f(x)$ is $[\alpha, \beta]$ then distance of $(\alpha, \beta)$ from $3 x+4 y+12=0$ is
JEE Main 2025 January 23 Shift 2 Exam Analysis
Based on the shift pattern of the January 23 JEE Main 2025 exam is said to be moderately difficult as previous shifts. Students should prepare for a variety of questions in Mathematics, Physics, and Chemistry for other shifts; It can be understood that some areas may be slightly harder than others. Let’s break down the structure of the exam: