User Forum

The temperature changes in a kettle of water was recorded for 14 minutes and represented in the graph as shown.

Which of the following statements is/are true?
1. The water in the kettle was initially in the liquid state.
2. There was less water in the kettle at point 'e' than at point 'a'.
3. The water took 6 minutes to reach its boiling point after it was heated.
4. The kettle of water was heated for 6 minutes.

A 1 and 2
B 1 and 3
C 1, 2 and 3
D 1, 3 and 4

Sachin being tested for his eyesight by an optician, sits 3 m in front of the mirror and looks at the image of the chart of letters, which seems to be 7 m in front of him. Where exactly is the chart of letters located?

A 1 m behind him
B 4 m behind him
C 3 m behind him
D 7 m behind him

Which tool makes use of a magnet?

A
B
C
D

Study the description given below. Plants X and Y have waterproof leaves and float on water; plant X has swollen leaf stalks but plant Y does not. Which of the following pairs of plants can 'X' and 'Y' be?

--------X--------------------------Y
AWater lily------------Water lettuce
BWater lily------------Water hyacinth
CWater hyacinth------Water lettuce
DWater moss fern-----Water lily

Rs 100000 was invested by Mohan in a fixed deposit @ 10% per annum at CI. However, every year he was to pay 20% tax on the compound interest. How much money does Mohan has after 3 years ?

(A) Rs 128414

(B) Rs 108000

(C) Rs 126079.2

Refer to the given figure of housefly.


Identify its parts and select the correct option.
----------P ----------------- Q ----------------- R ----------------- S ---------------- T
A Head ---------- Antennae ---------- Abdomen ---------- Thorax ---------- Leg
B Head ---------- Antennae ---------- Neck ---------- Abdomen ---------- Leg
C Antennae ---------- Head ---------- Thorax ---------- Abdomen ---------- Leg
D Antennae ---------- Head ---------- Neck ---------- Abdomen ---------- Leg

If and ab ≠ 0, then is equal to _______.

(A)

(B)

(C) 1

Read the given paragraph with few blanks in it.
During the process of cloning Dolly, a cell was collected from the ______ of a ______ ewe and an egg was collected from ______ ewe and was enucleated. The nucleus from the mammary gland cell was taken, and inserted into this enucleated egg and the egg (______) was implanted into the ______ ewe which gave birth to Dolly after due time. Now select the option that will correctly fill the blanks in the above paragraph.

AOvarian follicle, Finn Dorsett, Scottish blackface, haploid, Finn Dorsett
BOvarian follicle, Scottish blackface, Finn Dorsett, diploid, Finn Dorsett
CMammary gland, Finn Dorsett, Scottish blackface, diploid, Scottish blackface.
DMammary gland, Finn Dorsett, Scottish blackface, haploid, Finn Dorsett

Refer to the given figures which show three different types of fission. Select the option which correctly matches them with the organism in which they occur.


--------(i)---------------------(ii)-----------(iii)
AEuglena--------Plasmodium---Amoeba
BPlasmodium---Paramoecium---Euglena
CParamoecium---Plasmodium---Euglena
DEuglena----------Paramoecium---Amoeba

Plant X is a vascular and invasive plant species that grows densely over the surface of a lake at a very high rate, due to pollution in water. It has been linked to oxygen depletion of the water, in spite of the fact that it is photosynthetic. Which of the following accounts for this contradiction?

AWhile being photosynthetic, X consumes oxygen at a faster rate than it releases the same, because of its high rate of growth.
BBecause X is highly invasive, it incorporates a large quantity of oxygen in its biomass.
CWhen X dies, the bacteria that decompose its dead body consume the oxygen dissolved in water and grow rapidly.
DNone of these