Case Study Based Question:
The Cake Plaza specialises in delivering a variety of traditional cakes, designer cakes, dry cakes, cookies, and more, made to order using the finest ingredients available in a wide array of tastes, colours, designs, and themes. You can have a customised cake with your message delivered to your doorstep to celebrate any event, occasion, festival, or gathering. Josephine, the owner of The Cake Plaza, resides in Delhi. She wants to expand her business to other parts of the country, but lacks the necessary funds for that. She also hopes that people from other states will learn about her delicious cakes and cookies. However, she is concerned that her shop might catch fire, as happened with one of the neighbouring shops last week.
Based on the information provided about The Cake Plaza, answer the following question: State any three business activities that Josephine will use to achieve her goal.
Q1. A solution turns the red litmus paper blue. Excess addition of which of the following solutions would reverse the change?
(i) Lime water
(ii) Baking soda
(iii) Vinegar
(iv) Common salt solution
Answer: (iii) Vinegar
Only vinegar (acetic acid) is acidic and can neutralise the base, turning the blue litmus back to red.
Infer the meaning of the following words from the context
Q1. paddling (wading in water, walking with bare feet in shallow water)
Answer: The poet describes the scene when her mother was young and she was enjoying paddling in water with her two cousins, who were holding her hands.
Write your answers in the blanks provided. Use the words from the chapter to complete the sentences.
1. The variety of plants and animals around us is part of __________.
2. Grouping organisms involves considering their __________ and differences.
Siblings hold a unique place in our lives—they’re our partners in mischief, our first friends, and often our lifelong supporters. Around the world, different cultures celebrate these bonds in their own ways. Two such celebrations are Siblings Day, observed in the US, Canada, and parts of Europe, and Raksha Bandhan, a centuries-old Hindu festival in India. Let’s explore these holidays and what makes them special.
The poet looks at an old photograph of her mother as a child, enjoying a seaside holiday with her two cousins. The picture shows them standing in the shallow water, their feet temporarily against the everlasting sea. This contrast reminds the poet how short human life is compared to nature, which changes very slowly. The poem also shows us the poet’s mother’s happy and exciting childhood. At twelve years old, she spent her holidays by the sea, playing in the water with her cousins. She wore pretty, colourful dresses that matched the fun beach atmosphere.
What is the Collatz Conjecture?
Have you ever played with numbers and discovered an intriguing pattern? The Collatz Conjecture (also known as the 3n + 1 problem) is a renowned unsolved mathematical puzzle that even the brightest mathematicians have yet to solve!
Q1. Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range.
(i) {(2,1), (5,1), (8,1), (11,1), (14,1), (17,1)}
(ii) {(2,1), (4,2), (6,3), (8,4), (10,5), (12,6), (14,7)}
(iii) {(1,3), (1,5), (2,5)}.
