The question asks about the color change of pH paper when dipped in gastric juice. To answer this, we need to understand the nature of gastric juice (acidic, basic, or neutral) and how pH paper indicates different pH values through color changes.
A) Red — Gastric juice is highly acidic due to the presence of hydrochloric acid. Solutions with a pH value between 1 and 3 are strongly acidic, and when pH paper is dipped into such solutions, it typically turns red.
This question deals with the phenomenon of refraction, specifically how light behaves when it passes from one medium to another with a different refractive index. We need to apply Snell's Law and the concept of refractive index to determine the direction of bending.
C) bend towards the normal. When light passes from a rarer medium (like air) to a denser medium (like water), it slows down and bends towards the normal. This is because the angle of refraction will be smaller than the angle of incidence.
The question asks to identify the number of elements between Potassium (K) and Copper (Cu) according to Newlands' Law of Octaves. To answer this, we need to recall the arrangement of elements in Newlands' Octaves and then count the elements between the specified ones.
Let's list them clearly:
K (Potassium)
Cu (Copper)
Counting these, there are 7 elements between Potassium and Copper.
D) 7 — As per the arrangement of elements in Newlands' Octaves, there are 7 elements (Calcium, Chromium, Titanium, Manganese, Iron, Cobalt, Nickel) between Potassium and Copper.
The question asks to identify the Hindu deity associated with the names Venkateshwara, Venkatachalapati, Srinivasa, and Balaji. This requires knowledge of common epithets and forms of major Hindu gods.
Correct Option: A) Vishnu
To find the speed in km/h, we first need to calculate the speed in meters per second (m/s) using the given distance and time. Then, we will convert this speed from m/s to km/h using the appropriate conversion factor.
The formula for speed is:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]\[ \text{Speed} = \frac{375 \text{ m}}{75 \text{ s}} \]\[ \text{Speed} = 5 \text{ m/s} \]To convert m/s to km/h, we multiply by the conversion factor \(\frac{18}{5}\) (since \(1 \text{ km} = 1000 \text{ m}\) and \(1 \text{ hour} = 3600 \text{ seconds}\), so \[1 \text{ m/s} = 1 \times \frac{3600}{1000} \text{ km/h} = \frac{18}{5} \text{ km/h}\]).
\[ \text{Speed (in km/h)} = \text{Speed (in m/s)} \times \frac{18}{5} \]\[ \text{Speed (in km/h)} = 5 \times \frac{18}{5} \]\[ \text{Speed (in km/h)} = 18 \text{ km/h} \]Correct Option: B) 18
The question asks for a mode of political organization that unites separate states or polities while allowing them to maintain their individual integrity. We need to evaluate each option based on its definition in political science.
Correct Option: B) Federalism — Federalism is a system of government where power is constitutionally divided between a central government and constituent political units (like states or provinces). This division allows both levels of government to operate independently within their defined spheres, thus uniting them under an overarching system while preserving their individual integrity.
The pH scale is used to specify the acidity or basicity of an aqueous solution. It ranges from 0 to 14. A neutral solution is one that is neither acidic nor basic. We need to identify the pH value that corresponds to a neutral solution.
B) 7 — A pH of 7 indicates a neutral solution, where the concentrations of hydrogen ions and hydroxide ions are equal.
Study the given letter, number, symbol series and answer the asked question.
7 T % N 9 * M $ 3 U L = 8 Y @ G & 4 E > 5 & R 3 ! K # 7 H = Y 6 R
How many numbers are there, which are immediately preceded by a symbol and immediately followed by a letter?
The problem asks us to identify the number of instances where a number is immediately preceded by a symbol and immediately followed by a letter in the given series. We need to scan the series and look for the pattern: Symbol - Number - Letter.
7 T % N 9 * M $ 3 U L = 8 Y @ G & 4 E > 5 & R 3 ! K # 7 H = Y 6 R% N 9 - No, 9 is a number, % is a symbol, but N is a letter. The pattern is Symbol-Number-Letter. This is Symbol-Letter-Number.* M $ - No, M is a letter.$ 3 U - Here, '$' is a symbol, '3' is a number, and 'U' is a letter. This matches the pattern. (Count 1)= 8 Y - Here, '=' is a symbol, '8' is a number, and 'Y' is a letter. This matches the pattern. (Count 2)& 4 E - Here, '&' is a symbol, '4' is a number, and 'E' is a letter. This matches the pattern. (Count 3)& R 3 - No, R is a letter.! K # - No, K is a letter.# 7 H - Here, '#' is a symbol, '7' is a number, and 'H' is a letter. This matches the pattern. (Count 4)= Y 6 - No, Y is a letter.B) 4 is the correct answer because there are four instances in the series where a number is immediately preceded by a symbol and immediately followed by a letter: $3U, =8Y, &4E, #7H.
The question asks to identify natural resources whose judicious use is crucial for preventing intense global warming. This requires understanding which resources contribute significantly to greenhouse gas emissions when exploited or consumed.
Therefore, judicious use of coal and petroleum is essential to mitigate global warming.
C) Coal and petroleum are fossil fuels. Their combustion for energy generation, industrial processes, and transportation releases significant amounts of carbon dioxide, the primary greenhouse gas responsible for global warming. Reducing their consumption and transitioning to renewable energy sources is critical for combating climate change.
To find the net percentage increase after successive percentage changes, we can use a direct formula or calculate the changes step-by-step. The direct formula for two successive percentage increases of \(x\%\) and \(y\%\) is \((x + y + \frac{xy}{100})\%\).
Identify the given percentage increases:
First increase (\(x\)) = 10%
Second increase (\(y\)) = 8%
Apply the formula for successive percentage changes:
Net percentage increase \( = \left(x + y + \frac{xy}{100}\right)\%\)
Substitute the values into the formula:
\[ \text{Net increase} = \left(10 + 8 + \frac{10 \times 8}{100}\right)\% \]Calculate the term \(\frac{xy}{100}\):
\[ \frac{10 \times 8}{100} = \frac{80}{100} = 0.8 \]Add the values:
\[ \text{Net increase} = (10 + 8 + 0.8)\% = 18.8\% \]Alternatively, using a base value:
Let the original price be \(P\).
After a 10% increase, the new price is \(P \times (1 + \frac{10}{100}) = P \times 1.1\).
Then, this new price is increased by 8%. So, the final price is \[(P \times 1.1) \times (1 + \frac{8}{100}) = P \times 1.1 \times 1.08\].
Calculate the product: \(1.1 \times 1.08 = 1.188\).
The final price is \(1.188P\). This means the price is \(1.188\) times the original price, or \(118.8\%\) of the original price.
The net percentage increase is \((118.8 - 100)\% = 18.8\%\).
C) 18.8%